Best quick service type place outside of the parks was Red Oven Pizza. I'm a bit of a pizza snob and generally hate chain pizza, but this was really good and somewhat economical. Best sit down was Pat O'Briens. We really liked that and my kids loved getting the NA Hurricanes (and I loved the real Hurricanes). It is exactly like the famous Pat O'Briens in New Orleans.
I didn't eat sit down at IOA, but thought the quick service stuff was below par compared to comparable type places at Disney. But US was great. We loved Fast Food Blvd (except for the long lines) and loved eating it in Moe's Tavern with a cold Duff's beer. And we did the Cinematic dinner/show thing at Lombard's. Lombard's pretty good. It has no character at all to it, but the food was good and the price was fair for it (by amusement park standards). I wasn't "wowed" but I wasn't disappointed either.