I usually book my own Disney trips (over 20 of them) but used AAA last time and did save some money that way.

I agree that www.disboards.com is very helpful (though it has become so large that it's often tough to weed through all the posts).

Also, go to the Disney site and look for the special offers. Make sure you click on those links for pricing. Additionally, determine ahead of time if you want park hopper passes/waterparks/non-expiring passes. They cost more.

Have fun.