All U.S. citizens must have a valid proof of citizenship. Preferred by the Government Officials, a passport or passport card will be required for overnight stays in the Bahamas. For more information on passport cards, please click here http://travel.state.gov/passport/ppt_card/ppt_card_3926.html
. For the cruise only, not stays, a Government issued birth certificate with a raised seal (not from hospital) is an acceptable form of identification if accompanied by a photo ID. Resident aliens must travel with their “Green Card” Alien registration cards and a Government issued photo ID. Guests from other countries must possess a legitimate passport and should check with their travel agent or appropriate consulate to determine other necessary travel documentation. All guests over 16 years must carry a Government issued picture ID such as a state or provincial driver's license with a picture or a Government photo ID card.