call the general wdw number, but i am almost positive that you can. a couple of things have changed lately about aps so i could be wrong but if i got my ap at the disney store in atlanta, why can't you get them anywhere at a disney store?
also, we were quoted one price for the fort wilderness cabins with our aps and then two months later, i just happened to be looking around on another wdw site and the price had gone down again! and no one had bothered to let us know. i would hope that they would have given us the cheaper rate once we got there, but we were not notified or anything so maybe not, because think about it, how would i have known- and they do have so many different rates for everyone. my point is, right before you leave, call and ask if that is the newest most recently updated quote on your room using the ap. my guess is the prices may keep going down. have a good time. kiss a character for me.