Isn't your trip going to be 3 weeks long? I remember some of your other threads...
You should def get the TIW card. If you spend at least $375 on food at the participating locations, you break even with the cost of purchase ($75), so any more than that is money saved.
That said, there are some AP discounts on food, but with lots of strings and not as good as the deal with TIW. Also, TIW has a lot more locations.
Resort Dining - 10% off the regular price of food and non-alcoholic beverages, weekdays only, for the passholder and up to 3 guests:
ESPN Club - Lunch
Sand Trap - Lunch
The Wave
Trail's End - Breakfast and Lunch
Grand Floridian Cafe - breakfast and lunch
Olivia's
Boatwright's
Turf Club - lunch
Captain's Grill
In the MK:
10% off at The Noodle Station (this one cracks me up since the place is almost never open)
At Epcot:
10% off food and non-alcoholic beverages, weekdays, during lunch:
Coral Reef
Les Chefs de France
Nine Dragons
Restaurant Marrakesh
Rose and Crown (sit down)
San Angel Inn
Teppan Edo
Tokyo Dining
Tutto Italia
At AK:
Rainforest Cafe - 10% off entrees
Yak and Yeti - it says 10% off entrees, but they gave me 10% off the whole bill - I have TIW, but they don't take it here.
Tusker House - 10% off at lunch or dinner
HS:
10% of during "various meal periods" (????) at Studio Catering Company
DTD:
Fulton's- 20% at lunch, 10% at dinner
Ghirardelli - 10% off
House of Blues - 20% lunch, 10% dinner
Planet Hollywood - 10%
Portobello - 20% lunch, 10% dinner
Rainforest Cafe - 10% at lunch and dinner
Wolfgang Puck Cafe - 20% lunch, 10% dinner
Wolfgang Puck Express - 10%