We received the GAT coupon book when we booked thru them July 2008. They coupon book had discounts to Seaworld, Aquarium of the Pacific,
Legoland and other attractions that were similar to
AAA discounts. The good thing about the coupon book that stood out were the discounts to the PP, DL and GCH restaurants (i.e. Goofy's Kitchen, Storyteller's) and a 20% discount at the World of
Disney store, some DTD stores, Medieval Times discount.
For us, it was worth it because the GAT price on the hotel we wanted was better priced than any other discount travel website, plus GAT included a $50 Chevron gift card, and then the coupon book.