Sorry, but I only just realized you have to be a Florida resident for this benefit, but for those of you who are (or know someone who is...)
Disney's Dining Experience
Membership features an extensive array of benefits, ranging from invitations to private events to 20% discounts at participating Resort and Theme Park restaurants. Plus, you can party at Pleasure Island for half-price and attend special events. Proof of Florida residency is required
Price $60.00, (AP, SP & DC $55.00)
For more information or to purchase membership, call (407) 566-5858 option 3.
It mostly covers all the table service restaurants and the All-Star food courts
Does cover the Luau at the Poly (DC gives 10% at reservation - DD gives add'l 20% with your bill), but not Mickey's BBQ and only the late show at HDD at 9:30 which is back. DC gives 10% off HDD, I am not sure if it is for all shows, I got the discount for the 7:15 show.
Hope this helps in some way!