It looked like all the majors were there. We were on US Airways and not only did we check our bags, but got boarding passes as well.
Do you have to use Disney Transfers in order to do this?[/
Nope. This is a service of the airlines, unrelated to
DCL, and we happily left our luggage and went and got a car from
Avis. Can't tell you how liberating it was at the end of the day to just drop the car off and go right to the security area. No hassles with schlepping luggage on the Avis bus.