If you book a room-only with a AAA discount rate (when they're released) and a better discount comes out later--think Annual Pass, as long as there is availability where you wanted to stay, you could change the AAA discount to the Annual Pass one. However, if you book a package, currently the only way to get a discount on a package is to book directly through AAA and get the room portion discounted. That is unless Disney offers a different promo that would allow use of a discounted room rate to be booked with a package as they have just released for this fall--but that is a Disney sponsored promo, not something special thru AAA. Hope I'm not confusing you!