Marks Cruise Tips Passport & Visa Information

Cruise Lines requires guests to provide proper travel documentation in order to travel. The passport requirement does NOT apply to U.S. citizens traveling to or returning directly from a U.S. territory.  Non-U.S Citizens must contact the appropriate Consulates, U.S. Embassy and U.S. Immigration office to inquire about necessary travel documentation. Cruise Lines, Marks Cruise Tips, and Marks Travel Network assumes no responsibility for advising guests of Immigration requirements.
It is recommended that all guests travel with a valid passport during their cruise. This will enable guests to fly from the U.S. to meet their ship at the first port should they miss their scheduled embarkation and allow guests that must disembark the ship before their cruise ends due to an emergency to fly back to the U.S without significant delays and complications. It is also recommended that all guests travel with a passport valid for at least 6 months beyond completion of travel.
I found this on the web. hope it helps...
http://www.passportsandvisas.com 
Travel Friends as you know, the LAWS are changing all the time, check with your State and Federal Government for updates... Marks Cruise Tips is a division of Marks Travel Network...