For U.S. citizens, whether you need a passport for Royal Caribbean’s private island, Perfect Day at CocoCay, depends on your cruise itinerary. If you are on a "closed-loop" cruise—one that departs from and returns to the same U.S. port—you are technically permitted to use a state-issued birth certificate and a government photo ID (like a driver's license) instead of a passport. However, Royal Caribbean and travel experts strongly recommend a passport for all guests. The primary reason is that if a medical emergency or mechanical issue forces you to fly home from the Bahamas, a birth certificate will not be accepted for international air travel; only a passport book allows you to board a flight back to the U.S. from a foreign territory. For non-U.S. citizens, such as Canadians or international travelers, a valid passport is mandatory for the cruise regardless of the departure port. In 2026, having a passport ensures the most seamless experience at customs and protects you against unexpected travel disruptions.