Agree. To the OP, be advised that many airlines will not let you check in until 3 hours ahead of time, and they mean exactly to the minute! In fact, last cruise I saw a sign that one airline wouldn't check you in until 2 hrs before. (Obviously no international flights on that one). They make you wait outside the check in area where there is very little seating. Just FYI. Personally I would cancel the shuttle, grab a taxi which has never been an issue for us, and stay onboard until you have to leave.