NEW… All citizens, regardless of age (infants included ) will be required to show a passport. Guests sailing in mid December 2006 whose itinerary transits or ends its voyage in the United States on or after December 30, 2006 will be required to present a valid passport during ship check-in formalities. Guests sailing on or after December 30, 2006 will be required to present a valid passport during ship check-in formalities. Passports must be valid for at least 6 months after sailing. For details see Passport Information later in this e-mail. You are responsible for having the proper documentation with you when you travel. In addition Visa’s may be required to enter certain countries while on a cruise. So, well in advance of leaving home, check with the cruise line for the exact documentation requirements for your cruise or cruisetour. Failure to have the proper documentation ( Passport, Visa, Health Vaccination Certificates etc. ) as required will result in denied boarding and you will not get a refund for your cruise. . Citizens of other countries must carry valid passports and the necessary visa.