I'd get the bus transfers that Carnival offers....you pick up your luggage in baggage claim check in with the Carnival staff person in baggage claim they direct or lead you where you need to go next and then you board the bus. It was $39/pp round trip. The wait wasn't long....they take your luggage and once at the terminal give it to the guys who take it to the ship (keep your carryons with you)....the busses all line up a very short distance from the terminal.