AAA offers room discounts, which vary depending on the level of your resort (value, mod, deluxe) and time of year. There's also a small discount on tickets. Also, if you have a car, you can get the AAA Diamond parking pass, which doesn't give you free parking, but allows you access to a special area of the parking lot.
You should really talk to your AAA office about your plans. The
travel agent can run you some quotes, which you can compare to the Disney site or any other quotes you have. Or you could check out their website.
Keep in mind that if you are interested in
free dining, your AAA agent can add it to an existing package, but you'll lose your room discount. So you'll have to pay the difference.