15 EAN Holdings LLC (Operating as Enterprise, Alamo and National car rental companies)
Report Abuse. If you are a U.S. citizen, then you do not need a passport for Hawaii. Hawaii is part of the United States. If you travel to the Caribbean, Canada, Mexico or other places outside of the United States, then you will need a passport starting January 23, 2007 for air travel. Source(s): http://travel.state.gov/travel/cbpmc/cbp...
HOWEVER, it is possible that one or more of the Caribbean Islands on your itinerary, does require you to have a passport to enter their country. In that case, it is very possible that the cruise line will require you to have a passport to board, even if it is not a U.S. requirement.You should always check with your cruise ship, travel agent and or destination country to confirm the requirements for entry into the foreign countries you will be visiting.f the cruise takes you beyond that 90 day admission period, you will have to apply for a new admission, and you will have to convince the CBP Officer that you were not just taking the cruise in an attempt to circumvent the 90 day limit for VWP travelers.