AAA is good to get your traveler cheques for free, tour books, maps, road service, etc. When it comes to traveling to Disney, there's not much that they offer.
You can save more doing your own thing, rather than with their assistance.
Also, most people don't know that you don't need a membership to use their travel agents. I booked with them the first time we traveled to Disney and the experience was not very positive. They put me in a motel, rather than the hotel they showed me in a picture, said nothing about how the transportation to and from the parks off site really slacks off, gave me vouchers - not the real tickets, I had to stand in lines at Mears and Disney (as if I was purchasing the tickets for the first time anyway), did not seat us in the flight-I had to do that myself at check-in and ended up in the plane's tail, just to be able to stay by my two children.
Once I go to the parks, it was a blast but they did not help as much as I expected them to.
Wanda