I believe it was a 15% discount on the tour - definitely worth mentioning AAA. As far as the rides are concerned, I think the CM who is directing the tour chooses the rides you go on. We went on POTC and the Haunted Mansion (from other postings, I think these are typical). POTC was not crowded and we walked in with the rest of the people in line. Haunted Mansion was more crowded so you are escorted through a cool side hallway.
We booked our rooms only through AAA and received what they called the "Diamond Card" - it gives you a list of discounts throughout the park you can get just by being a AAA member. Don't hesitate to stop in at the AAA courtesy lounge next to the Carousel of Progress. We got a cold drink and a place to sit and cool off for a few minutes (it's on the park map). I don't think a lot of people know this is there and miss out on a nice place to relax for a while.
We also scheduled the Segway Experience one hour tour (the 2 hour one was booked up). This was a wonderful and different activity to try - we enjoyed it very much. Again, mentioned AAA and received the discount.
Check with your local AAA office for possibly even more activities and discounts through them.
Have a wonderful time on your trip!!!