Planning a cruise involves several considerations, and one important aspect is whether to bring a passport. Although some itineraries allow U.S. citizens to board without one, it is generally advisable to carry a valid passport. Cruise lines such as Royal Caribbean and Celebrity Cruises suggest having a passport on hand, even for closed-loop sailings, to facilitate smooth boarding and disembarking.
A passport becomes essential in emergencies like missing the ship or requiring medical evacuation, as it is necessary for re-entry into the United States. Additionally, certain ports may require a passport for entry despite not being mandatory for boarding. It is recommended that your passport be valid for at least six months beyond your return date. This precaution can help avoid unnecessary stress and allow you to focus on enjoying your vacation.