All visitors must carry a valid passport for at least six months. Those traveling as tourists must also have a tourist card.
Attention: U.S. citizens need a U.S. Treasury Department license in order to engage in any transactions related to travel to and within Cuba (this includes the use of U.S. currency). Before planning any travel to Cuba, U.S. citizens should contact the Licensing Division, Office of Foreign Assets Control, U.S. Department of Treasury, (202/622-2480) or www.treas.gov/ofac.
Having a Cuba cellular phone rental is handy in case you lose your documentation in Cuba.