U.S. and Canadian citizens need proof of citizenship, such as a birth certificate, photo ID, or current passport. British visitors need a current passport. All travelers must have a return or ongoing airline ticket. Ferries are a good way to get from one island to another, but aren't offered between every island. The only government ferry runs between Grand Turk and Salt Cay.
Taxis are always available.
Other options include scooter and bicycle rental. Remember, driving is on the left. Insect repellent is a must. Watch out for the manchineel tree on the island of uninhabited West Caicos. Its milky sap is poisonous and can cause scarring blisters.