Does anyone know anything about this enhanced fast pass that you can get through AAA?
I think that's only for Disneyland, not WDW, basically it removes the time restriction for your next fast pass allowing you to hold one FP per ticket for each attraction at the same time. Normally you can only hold one FP at a time and a new one will be made available after the time on the first one rolls around, this is done to spread them out and keep people from grabbing them all at once. You must book at least a 2 night hotel stay at one of the three Disneyland hotel to get the enhanced FP.
Last I checked the only perk for AAA members at WDW was the AAA parking pass which gives you "preferred" parking at WDW. Quite simply there are a lot more rooms in WDW, (23 resorts vs 3) so many that a feature like this is impractical at WDW.