First let me say I would not book a room with the AAA rate if I wasn't a AAA member and had the AAA card to show at check-in. But it is interesting how few times I have been asked to show the card during check-in at a Disney resort or off Disney hotel. In fact, I'm not sure if anyone has ever asked for my AAA card when making my reservation or when checking in until last week when I made a AAA discount reservation at AKL for my father and the Disney reservationist requested I call her back with the AAA number (although she made the reservation without the number).
Going back a few years when the Disney Club existed I was only asked once for my Disney Club card at check-in.
Phrank