I replied to a thread around here somewhere about AAA. It was recently but I can't find it!
My entire family has been AAA members since as long as I can remember (and could drive). I consider it a good investment, even without Disney in the picture. There are many AAA savings around the country and the car service alone is worth it. Also, if you go into any AAA place you can get free maps and travel books and stuff.
I wish I could find that thread... if anyone else does, post it here! I know a lot of people posted about how much they liked AAA!!