I'm not aware of any airfare discounts but they do offer Amtrak discounts and Hertz Car Rental discounts.
As far as WDW resort discounts during value season, the value and moderate resorts would be 20% off of rack rate, the deluxes are 15% off.
The AAA perks at WDW can change at any time. The following are what I have as a AAA-Midatlantic member:
- Disney Character Storytelling experience with select AAA Vacations® packages. Guests can enjoy an intimate storytelling experience in a Theme Park with a Character from a classic Disney animated feature. (Theme Park admission, advance reservations and voucher required. Select days, limited seating and block out dates apply. Subject to availability.)
- EXCLUSIVE - The AAA Vacations ® Diamond Card provides special savings to AAA Vacations ® clients on select meals, merchandise, recreation, and more, at participating locations. The AAA Vacations ® Diamond Card may only be used during the package stay. All benefits are not valid with any other offer, discount, or promotion. Other restrictions and exclusions may apply. All dining discounts exclude tax and gratuity.
- The How To Guide - a 40-page, full color booklet packed with everything from Theme Park maps and childrens activities, to tours, Disney Character Dining and special tips to make your AAA Vacations® package stay the most magical ever.
- EXCLUSIVE - AAA Diamond Parking Convenient Preferred Parking in spaces is available at all four Walt Disney World® Theme Parks (block-out dates apply)
- AAA Vacations® keepsake luggage tag (one per person).
- AAA Disney Magic Moments® Savings for AAA/CAA members.
As others have pointed out, there are a number of other savings benefits from shopping to hotel discounts to insurance plans. It's well worth having for the roadside assistance. My DD16 will be testing for her drivers license in a couple of days. She'll be getting an associate AAA membership in her stocking. She's driving an 11yo car and I want to know that she'll have coverage in case something happens.