Hey Stephen - I have done this before and we do the same thing that Krisann did. The buses from the airport leave earlier and you get on the ship earlier because of your boarding number. Sometimes it isn't cheaper then a rental car, but not as stressful. They take care of your luggage, no traffic and you don't have to worry about returning the car and getting back to the port. In my opinion, Disney doesn't want the buses to leave their resorts earlier because you could spend more money on breakfast or whatever else you might have time to do. Okay, hope that helps a little!