Rate this post

Can you travel on a cruise without a passport? Yes, you can travel on a cruise without a passport on specific closed-loop cruises that start and end in the same U.S. port, allowing you to explore exciting destinations. SIXT.VN provides travel consultation services ensuring you have the correct documentation and a smooth journey. Consider SIXT.VN for assistance with your next trip so that you can enjoy breathtaking destinations, exotic voyages and international waters.

1. Understanding Cruise Travel and Passport Requirements

Cruise travel offers a fantastic way to see multiple destinations while enjoying the amenities and entertainment onboard a ship. But what about passport requirements? Let’s delve into when you can set sail without needing a passport and when it’s essential.

1.1. What is a Closed-Loop Cruise?

A closed-loop cruise begins and ends at the same port within the United States. According to the U.S. Customs and Border Protection (CBP), these cruises often allow U.S. citizens to travel to certain international destinations without a passport.

Definition: A cruise that starts and finishes in the same U.S. port.
Example: A cruise departing from Miami, visiting the Bahamas, and returning to Miami.
Advantage: U.S. citizens can often travel on these cruises without a passport, using alternative forms of identification.

1.2. When is a Passport Required for Cruises?

While closed-loop cruises offer passport-free travel, there are situations where a passport is mandatory. It’s crucial to understand these scenarios to avoid any travel disruptions.

Open-Jaw Cruises: If your cruise starts in one country and ends in another, a passport is generally required.
International Cruises: Cruises that visit international ports outside the closed-loop parameters typically require a passport. This includes many European and Asian cruises.
Unforeseen Circumstances: If a medical emergency or other unexpected event forces you to fly back to the U.S. from a foreign port, a passport will be necessary.

1.3. Alternative Documents Accepted on Closed-Loop Cruises

For U.S. citizens on closed-loop cruises, a passport isn’t the only acceptable form of identification. Several alternative documents can be used to verify citizenship and identity.

Birth Certificate: An original or certified copy of your birth certificate issued by a government authority.
Government-Issued Photo ID: A driver’s license, state ID card, or other photo identification issued by a U.S. government agency.
Certificate of Naturalization: This document proves that you have become a naturalized U.S. citizen.
Trusted Traveler Program Cards: Cards like Nexus, SENTRI, or FAST can also be used as proof of citizenship and identity.

1.4. Recommendations from SIXT.VN

While it’s possible to take certain cruises without a passport, SIXT.VN strongly recommends that all travelers obtain a valid U.S. passport before any international travel. Having a passport provides flexibility and security, especially in unforeseen circumstances. SIXT.VN can assist you with travel advice, documentation checklists, and other services to ensure your trip is seamless.

2. Top Cruise Destinations You Can Visit Without a Passport

If you’re eager to set sail but don’t have a passport, don’t worry! Several fantastic cruise destinations are accessible on closed-loop cruises.

2.1. The Bahamas

The Bahamas, with its stunning beaches and crystal-clear waters, is a popular cruise destination. Cruises to the Bahamas often depart from Florida ports like Miami, Fort Lauderdale, and Port Canaveral.

Key Attractions:
- Nassau: Explore historic sites, shop at local markets, and relax on Cable Beach.
- Freeport: Discover the Lucayan National Park and enjoy water sports.
- Private Islands: Some cruises stop at private islands like CocoCay or Half Moon Cay, offering exclusive beach experiences.
Activities: Snorkeling, diving, swimming with dolphins, and exploring the local culture.
Why Choose the Bahamas: Close proximity to the U.S., beautiful beaches, and a wide range of activities make it a perfect destination for a quick getaway.

Family splashing in the waters in the bahamas, enjoying the beautiful beaches and activities

2.2. Bermuda

Bermuda, known for its pink-sand beaches and British colonial charm, is another excellent option for passport-free cruising. Cruises to Bermuda typically depart from East Coast ports like New York, Boston, and Baltimore.

Key Attractions:
- Hamilton: The capital city, offering shopping, dining, and historical landmarks.
- St. George’s: A UNESCO World Heritage site with well-preserved colonial architecture.
- Horseshoe Bay: Famous for its pink sand and clear turquoise waters.
Activities: Golfing, snorkeling, exploring historic sites, and relaxing on the beach.
Why Choose Bermuda: Unique blend of British culture and island beauty, offering a sophisticated yet relaxed vacation experience.

Beautiful beach with waves in Warwick Long Bay in Bermuda, showcasing the pink-sand beaches

2.3. Mexico (Baja Peninsula)

Cruises to the Baja Peninsula in Mexico offer a taste of Mexican culture and beautiful coastal scenery. These cruises often depart from California ports like Los Angeles, Long Beach, and San Diego.

Key Attractions:
- Ensenada: Explore the local markets, sample Mexican cuisine, and visit La Bufadora (a marine geyser).
- Cabo San Lucas: Known for its stunning beaches, water sports, and vibrant nightlife.
- Catalina Island: A charming island with opportunities for hiking, snorkeling, and kayaking.
Activities: Whale watching (seasonal), water sports, exploring local towns, and enjoying Mexican cuisine.
Why Choose Baja Mexico: Conveniently located for West Coast residents, offering a mix of relaxation and adventure.

The Arch in Cabo San Lucas Mexico, highlighting the beautiful coastal scenery

2.4. Alaska

Alaskan cruises provide breathtaking views of glaciers, wildlife, and stunning landscapes. Closed-loop cruises to Alaska typically depart from Seattle, Washington, or Vancouver, British Columbia (though cruises from Vancouver require a passport).

Key Attractions:
- Juneau: The capital city, accessible only by plane or boat, offering glacier tours and wildlife viewing.
- Skagway: A historic gold rush town with well-preserved buildings and scenic railway tours.
- Ketchikan: Known for its totem poles and salmon fishing.
Activities: Whale watching, glacier viewing, hiking, and exploring local cultures.
Why Choose Alaska: Unparalleled natural beauty and unique wildlife viewing opportunities.

Whale in Alaska jumping out of the water, showcasing the spectacular wildlife viewing opportunities

2.5. Hawaii

Cruises around the Hawaiian Islands offer a chance to explore the unique culture and natural beauty of the Aloha State. These cruises often depart from Honolulu or other U.S. West Coast ports.

Key Attractions:
- Oahu: Visit Pearl Harbor, relax on Waikiki Beach, and hike Diamond Head.
- Maui: Explore the Road to Hana, visit Haleakala National Park, and enjoy whale watching (seasonal).
- Kauai: Known as the “Garden Isle,” offering stunning landscapes, including the Na Pali Coast.
- Big Island: Home to active volcanoes, black sand beaches, and diverse ecosystems.
Activities: Snorkeling, surfing, hiking, exploring volcanoes, and attending luaus.
Why Choose Hawaii: Diverse landscapes, rich culture, and year-round warm weather make it a dream destination.

Na Pali coastline, Kauai in the Hawaiian Islands, highlighting the stunning landscapes and natural beauty

2.6. Cruises to New England and Canada

Cruises to New England and Canada offer a scenic and cultural experience, exploring historic cities and beautiful coastal landscapes. These cruises typically depart from New York or Boston.

Key Attractions:
- Boston: Explore historic sites, visit Harvard University, and enjoy the vibrant city life.
- Halifax: Discover the Maritime Museum of the Atlantic and explore the Halifax Public Gardens.
- Saint John: Visit the Reversing Falls and explore the historic city center.
- Portland, Maine: Known for its lighthouses, lobster, and picturesque coastline.
Activities: Sightseeing, whale watching, enjoying local cuisine, and exploring historic sites.
Why Choose New England and Canada: Rich history, beautiful scenery, and delicious seafood make it a unique and memorable cruise experience.

Yellow leaves on the trees in Boston, showcasing the scenic beauty of New England in the fall

3. Essential Documents for Cruise Travel Without a Passport

Even though you might not need a passport for certain cruises, having the correct documentation is still crucial. Let’s examine the necessary documents to ensure a smooth embarkation process.

3.1. Birth Certificate Requirements

A birth certificate is a primary document for proving U.S. citizenship on closed-loop cruises.

Type of Birth Certificate: It must be an original or certified copy issued by the vital records office in the state where you were born.
Information Required: The birth certificate must include your full name, date of birth, place of birth, and the names of your parents.
Acceptable Forms: Both long-form and short-form birth certificates are generally accepted, but a certified copy is always preferable.
Unacceptable Forms: Hospital-issued birth certificates or photocopies are not accepted.

3.2. Government-Issued Photo ID

Along with a birth certificate, a government-issued photo ID is required for cruise passengers aged 16 and older.

Acceptable IDs:
- Driver’s License: A valid driver’s license issued by any U.S. state.
- State ID Card: An identification card issued by a U.S. state’s Department of Motor Vehicles (DMV).
- Military ID: A valid U.S. military identification card.
Requirements: The ID must be current, unexpired, and include a photograph.
Purpose: To verify your identity and ensure that the name on your ID matches the name on your birth certificate or other citizenship documents.

3.3. Certificate of Naturalization

If you are a naturalized U.S. citizen, a Certificate of Naturalization serves as proof of citizenship.

What It Is: An official document issued by the U.S. government to individuals who have completed the naturalization process.
Information Required: It includes your name, date of birth, country of origin, and the date you became a U.S. citizen.
Usage: Presenting this certificate along with a government-issued photo ID allows you to travel on closed-loop cruises without a passport.

3.4. Trusted Traveler Program Cards

Certain cards from Trusted Traveler Programs can also be used as proof of citizenship and identity.

Acceptable Cards:
- NEXUS: For travelers between the U.S. and Canada.
- SENTRI: For travelers entering the U.S. from Mexico.
- FAST: For commercial truck drivers entering the U.S. from Canada or Mexico.
Benefits: These cards expedite border crossings and can be used in place of a passport for closed-loop cruises.

3.5. Considerations for Children

Children also need to provide proof of citizenship for cruises.

Under 16: Children under 16 can generally travel with only a birth certificate (original or certified copy).
16 and Over: Passengers aged 16 and older must have both a birth certificate and a government-issued photo ID.
Adoption or Custody Documents: If traveling with children who are adopted or for whom you have custody, it’s advisable to carry adoption papers or custody documents.

3.6. SIXT.VN’s Documentation Checklist

To assist travelers in preparing the necessary documents, SIXT.VN offers a comprehensive checklist:

Birth Certificate: Ensure it’s an original or certified copy.
Government-Issued Photo ID: Verify that it’s current and valid.
Certificate of Naturalization (if applicable): Keep the original certificate safe.
Trusted Traveler Program Card (if applicable): Ensure the card is valid and readily accessible.
Adoption or Custody Documents (if applicable): Carry these documents for children who are adopted or under your custody.

4. What to Expect During Embarkation Without a Passport

Embarking on a cruise without a passport involves a slightly different process than if you had one. Knowing what to expect can help make the experience smoother and less stressful.

4.1. Check-In Process

The check-in process is the first step to boarding your cruise.

Location: Cruise terminals have designated check-in areas for each cruise line.
Documents Needed: Have your birth certificate, government-issued photo ID, cruise ticket, and any required health forms ready.
Verification: Cruise line staff will verify your documents to ensure they meet the requirements for passport-free travel.
Security: You’ll go through a security screening similar to airport security.

4.2. Security Screening

Security is a top priority for cruise lines, and all passengers undergo a screening process.

Prohibited Items: Be aware of prohibited items, such as weapons, illegal drugs, and certain appliances.
Baggage Screening: Your carry-on and checked baggage will be screened.
Personal Screening: You may be required to walk through a metal detector.
Compliance: Follow all instructions from security personnel to ensure a smooth process.

4.3. Customs and Border Protection (CBP) Procedures

Even on closed-loop cruises, CBP may conduct inspections.

Document Review: CBP officers may review your documents to verify your citizenship and identity.
Questions: Be prepared to answer questions about your travel plans and purpose.
Compliance: Cooperate fully with CBP officers to avoid delays.

4.4. Potential Issues and How to Avoid Them

While most passengers have a smooth embarkation, issues can arise.

Document Discrepancies: Ensure that the name on your birth certificate matches the name on your photo ID.
Expired ID: Make sure your government-issued photo ID is current and unexpired.
Unacceptable Documents: Avoid bringing photocopies or non-certified birth certificates.
SIXT.VN Tips: Double-check all documents before leaving home and contact SIXT.VN for any last-minute questions.

4.5. Onboard Procedures

Once onboard, there are a few things to keep in mind.

Cruise Card: You’ll receive a cruise card, which serves as your room key, onboard credit card, and identification.
Safety Briefing: Attend the mandatory safety briefing to learn about emergency procedures.
Enjoy Your Cruise: Relax and enjoy the amenities, activities, and destinations your cruise offers.

5. What if You Need to Fly Home Unexpectedly?

One of the most significant risks of cruising without a passport is the potential difficulty in returning to the U.S. if an emergency requires you to fly home from a foreign port.

5.1. Medical Emergencies

Medical emergencies can occur unexpectedly, necessitating immediate evacuation and air travel.

Scenario: If you require urgent medical treatment not available on the ship, you may need to be evacuated to a hospital in a foreign country.
Passport Requirement: To fly back to the U.S., you’ll need a valid passport.
Without a Passport: Obtaining an emergency passport can be challenging and time-consuming.

5.2. Other Unexpected Events

Various unforeseen events can disrupt your cruise and require you to fly home.

Family Emergencies: A sudden illness or death in the family may require you to return home quickly.
Legal Issues: Legal problems can arise, necessitating your immediate return.
Travel Disruptions: Flight cancellations or other travel disruptions may force you to find alternative routes home.

5.3. Obtaining an Emergency Passport

If you find yourself in a situation where you need to fly home from a foreign port without a passport, you’ll need to obtain an emergency passport.

Contact the U.S. Embassy or Consulate: The first step is to contact the nearest U.S. embassy or consulate.
Required Documents: You’ll need to provide proof of citizenship (such as a birth certificate), a photo ID, and evidence of your emergency.
Application Process: You’ll need to complete an application form and pay the required fees.
Processing Time: Emergency passports can often be issued within 24-48 hours, but processing times can vary.

5.4. Challenges and Considerations

Obtaining an emergency passport can be challenging.

Location: U.S. embassies and consulates may not be easily accessible from all cruise ports.
Documentation: Gathering the necessary documents can be difficult, especially in an emergency.
Processing Delays: Processing times can vary, potentially delaying your return home.
SIXT.VN Recommendation: Having a valid passport significantly reduces these risks and provides peace of mind.

5.5. Travel Insurance

Travel insurance can provide assistance and coverage in emergency situations.

Coverage: Look for policies that cover medical emergencies, trip interruptions, and emergency evacuation.
Assistance: Some policies offer 24/7 assistance services to help you navigate emergencies.
SIXT.VN Partnership: SIXT.VN partners with reputable travel insurance providers to offer comprehensive coverage options.

6. Tips for a Smooth and Enjoyable Cruise Experience

Whether you’re cruising with or without a passport, careful planning can enhance your overall experience.

6.1. Plan Ahead

Thorough planning is key to a successful cruise.

Research Destinations: Learn about the ports of call and plan your activities in advance.
Book Excursions: Reserve shore excursions early to ensure availability.
Pack Appropriately: Pack clothing suitable for the climate and activities you plan to do.
SIXT.VN Assistance: SIXT.VN can help you plan your itinerary, book excursions, and provide packing tips.

6.2. Arrive Early

Arriving at the port early reduces stress and ensures you have ample time for check-in and security.

Recommended Arrival Time: Arrive at least 2-3 hours before the scheduled departure time.
Traffic Considerations: Account for potential traffic delays when traveling to the port.
SIXT.VN Transportation: SIXT.VN offers reliable airport transfer services to ensure you arrive on time.

6.3. Stay Informed

Stay updated on any changes or requirements from the cruise line.

Cruise Line Communication: Monitor emails and notifications from the cruise line for updates.
Health Advisories: Be aware of any health advisories or requirements.
SIXT.VN Updates: SIXT.VN provides timely updates and information to its clients.

6.4. Pack Smart

Packing efficiently helps you make the most of your cruise.

Essentials: Pack essential items like sunscreen, medications, and comfortable shoes.
Clothing: Choose versatile clothing items that can be mixed and matched.
Accessories: Bring accessories like hats, sunglasses, and swimwear.
SIXT.VN Packing List: SIXT.VN provides a detailed packing list to ensure you don’t forget anything important.

6.5. Enjoy Onboard Amenities

Take advantage of the amenities and activities offered onboard.

Dining: Explore the various dining options, from casual buffets to formal restaurants.
Entertainment: Enjoy live music, shows, and other entertainment options.
Activities: Participate in onboard activities like swimming, fitness classes, and games.
SIXT.VN Recommendations: SIXT.VN can provide recommendations for onboard activities and dining options based on your preferences.

7. The Benefits of Booking Your Cruise with SIXT.VN

Choosing SIXT.VN for your cruise arrangements comes with several distinct advantages.

7.1. Personalized Travel Planning

SIXT.VN offers personalized travel planning services to create the perfect cruise experience.

Customized Itineraries: Tailored itineraries based on your interests, preferences, and budget.
Expert Advice: Expert advice on destinations, cruise lines, and onboard activities.
SIXT.VN Consultation: Schedule a consultation with a travel expert to discuss your cruise plans.

7.2. Accommodation Assistance

SIXT.VN provides assistance with finding the perfect accommodations before and after your cruise.

Hotel Recommendations: Recommendations for hotels near the cruise port.
Booking Assistance: Assistance with booking hotels at competitive rates.
SIXT.VN Partnerships: Partnerships with top hotels to offer exclusive deals.

7.3. Transportation Services

SIXT.VN offers reliable transportation services to and from the cruise port.

Airport Transfers: Convenient airport transfer services to ensure you arrive on time.
Private Transportation: Private transportation options for a more luxurious experience.
SIXT.VN Reliability: Reliable and professional transportation services for peace of mind.

7.4. Tour Packages in Hanoi and Vietnam

Extend your vacation with tour packages in Hanoi and other parts of Vietnam.

Hanoi City Tours: Explore the cultural and historical landmarks of Hanoi.
Vietnam Excursions: Discover the natural beauty and rich heritage of Vietnam.
SIXT.VN Expertise: Leverage SIXT.VN’s expertise in local tours and excursions.

7.5. Comprehensive Support

SIXT.VN provides comprehensive support throughout your cruise journey.

24/7 Assistance: Access to 24/7 customer support for any questions or concerns.
Emergency Assistance: Emergency assistance services for unforeseen situations.
SIXT.VN Commitment: A commitment to ensuring a smooth and enjoyable cruise experience.

8. Understanding Cruise Travel and Passport Requirements

8.1. What is a Closed-Loop Cruise?

Definition: A cruise that starts and finishes in the same U.S. port.
Example: A cruise departing from Miami, visiting the Bahamas, and returning to Miami.
Advantage: U.S. citizens can often travel on these cruises without a passport, using alternative forms of identification.

8.2. When is a Passport Required for Cruises?

While closed-loop cruises offer passport-free travel, there are situations where a passport is mandatory. It’s crucial to understand these scenarios to avoid any travel disruptions.

Open-Jaw Cruises: If your cruise starts in one country and ends in another, a passport is generally required.
International Cruises: Cruises that visit international ports outside the closed-loop parameters typically require a passport. This includes many European and Asian cruises.
Unforeseen Circumstances: If a medical emergency or other unexpected event forces you to fly back to the U.S. from a foreign port, a passport will be necessary.

8.3. Alternative Documents Accepted on Closed-Loop Cruises

For U.S. citizens on closed-loop cruises, a passport isn’t the only acceptable form of identification. Several alternative documents can be used to verify citizenship and identity.

Birth Certificate: An original or certified copy of your birth certificate issued by a government authority.
Government-Issued Photo ID: A driver’s license, state ID card, or other photo identification issued by a U.S. government agency.
Certificate of Naturalization: This document proves that you have become a naturalized U.S. citizen.
Trusted Traveler Program Cards: Cards like Nexus, SENTRI, or FAST can also be used as proof of citizenship and identity.

8.4. Recommendations from SIXT.VN

9. Maximizing Your Cruise Experience in Vietnam with SIXT.VN

For those planning to extend their cruise vacation with a visit to Vietnam, SIXT.VN offers a range of services to enhance your experience.

9.1. Customized Vietnam Tour Packages

SIXT.VN creates customized tour packages that cater to your specific interests and preferences.

Historical Tours: Explore Vietnam’s rich history with visits to ancient temples, imperial cities, and historical sites.
Cultural Experiences: Immerse yourself in Vietnamese culture with cooking classes, traditional performances, and visits to local markets.
Nature and Adventure Tours: Discover Vietnam’s stunning natural beauty with treks through national parks, cruises along Ha Long Bay, and visits to picturesque landscapes.
Beach Getaways: Relax on Vietnam’s beautiful beaches with stays at luxurious resorts and opportunities for water sports and relaxation.

9.2. Airport Transfer Services in Vietnam

SIXT.VN offers reliable and comfortable airport transfer services to ensure a smooth start and end to your Vietnam adventure.

Private Car Transfers: Enjoy a private car transfer from the airport to your hotel in Hanoi or other cities in Vietnam.
Professional Drivers: Our experienced and professional drivers will ensure a safe and comfortable journey.
Meet and Greet Service: Our representative will meet you at the airport and assist you with your luggage and transportation.

9.3. Hotel Booking Assistance in Vietnam

SIXT.VN helps you find and book the perfect accommodations for your stay in Vietnam.

Wide Range of Options: Choose from a wide range of hotels, resorts, and guesthouses to suit your budget and preferences.
Best Price Guarantee: SIXT.VN ensures you get the best prices on your hotel bookings.
Expert Recommendations: Our travel experts can provide recommendations based on your needs and preferences.

9.4. Local Transportation Services in Vietnam

SIXT.VN offers various local transportation options to help you explore Vietnam with ease.

Car Rental Services: Rent a car with a driver to explore the country at your own pace.
Private Car Services: Hire a private car for day trips or multi-day excursions.
Motorbike Rentals: For the adventurous travelers, rent a motorbike and explore Vietnam’s scenic routes.

9.5. Travel Insurance for Vietnam

SIXT.VN provides travel insurance options to protect you from unforeseen circumstances during your Vietnam trip.

Comprehensive Coverage: Our travel insurance plans offer comprehensive coverage for medical emergencies, trip cancellations, and lost luggage.
24/7 Assistance: Access to 24/7 emergency assistance services for any issues that may arise during your trip.

10. FAQ: Cruising Without a Passport

10.1. Can a U.S. citizen take a cruise without a passport?

Yes, U.S. citizens can take closed-loop cruises (cruises that begin and end in the same U.S. port) to certain destinations without a passport, using alternative documents like a birth certificate and government-issued photo ID.

10.2. What documents do I need for a closed-loop cruise if I don’t have a passport?

You will typically need an original or certified copy of your birth certificate and a government-issued photo ID, such as a driver’s license.

10.3. Are there any risks to cruising without a passport?

Yes, if you need to fly back to the U.S. from a foreign port due to an emergency, you will need a passport. Obtaining an emergency passport can be challenging.

10.4. Does SIXT.VN recommend traveling with a passport?

Yes, SIXT.VN strongly recommends that all travelers obtain a valid U.S. passport before any international travel for added flexibility and security.

10.5. Can children travel on a cruise without a passport?

Yes, children under 16 can generally travel with only a birth certificate (original or certified copy). Passengers aged 16 and older must have both a birth certificate and a government-issued photo ID.

10.6. What is a closed-loop cruise?

A closed-loop cruise is one that starts and finishes in the same U.S. port, allowing U.S. citizens to travel to specific international destinations without a passport.

10.7. Which destinations can I visit on a closed-loop cruise without a passport?

Popular destinations include the Bahamas, Bermuda, Mexico (Baja Peninsula), Alaska, Hawaii, and cruises to New England and Canada.

10.8. How can SIXT.VN help me plan my cruise?

SIXT.VN offers personalized travel planning, accommodation assistance, transportation services, and comprehensive support to ensure a smooth and enjoyable cruise experience.

10.9. What if I need to obtain an emergency passport while on a cruise?

Contact the nearest U.S. embassy or consulate to apply for an emergency passport. You’ll need to provide proof of citizenship, a photo ID, and evidence of your emergency.

10.10. Does SIXT.VN offer travel insurance for cruises?

Yes, SIXT.VN partners with reputable travel insurance providers to offer comprehensive coverage options for medical emergencies, trip interruptions, and emergency evacuation.

Ready to embark on an unforgettable cruise adventure? Contact SIXT.VN today! Visit our website at SIXT.VN or call our hotline/WhatsApp at +84 986 244 358 to start planning your dream vacation. Let SIXT.VN take care of all the details, so you can relax and enjoy the journey. Our address is 260 Cau Giay, Hanoi, Vietnam.

Post Views: 66

Posted By

admin

Book a car quickly, just call or chat The world's top quality reputation. Explore our first class limousine & car rental services. Contact us with Zalo or Whatsapp

Can You Travel on a Cruise Without a Passport? Your Options Explored