If you are getting the AAA discount, you should save quite a bit. We're saving close to $400 on 8 nights at the Polynesian in July, for example. The precise percentage off varies.
As someone else noted, it's possible there are no more rooms with the AAA rate available, or that insurance has been included. There are also some rooms (suites) where AAA cannot get you a discount, and some seasons (Holiday I believe) where you cannot get an AAA discount.
But remember: if you want a package with the AAA rate, you must go through an agent at an AAA office. If you want a room only rate, you can call CRO directly and tell them you're an AAA member.