I took the ferry from Ft. Myers to Key West winter before last. Rode up and back. Nice trip, stopping overnight in Bahia Honda, Pennekamp and Curry Hammock. If you can't get reservations, try calling in the morning and see if they will accommodate you. It worked at Bahia Honda, which is one of the more popular state parks. Managed to get reservations at the other two. Nice trip, but very windy and the occasional downpour.