For international travel,  cruises that begin at and return to the same U.S. port, U.S. CITIZENS MUST HAVE A VALID PASSPORT or PASSCARD. For cruises that begin at and return to the same U.S. port, U.S. CITIZENS must have a VALID PASSPORT or PASSCARD).  NON-U.S. CITIZENS and RESIDENT ALIENS should contact their respective embassies and U.S. Immigration for applicable regulations.  

Please allow sufficient time for a Passport to be processed if you need to renew or get a new passport.  Make sure the names on your official travel documents match your reservation.  A "change fee" will be assessed if reservation need to be changed after your final due date.