The only Counter service place that I know of that doesnt have a/c is at Animal Kingdom's Flame Tree BBQ....
In Epcot the CS Tangerine Cafe in Morrocco may not have a/c, but even though it was hot in July when we went, we did share a meal here, and it was inside, so maybe the a/c was more in the back, as opposed to right there in front... also at Epcot its popular to eat at the Fish and Chips place and I dont think there is an inside to eat there (CS) the TS England is Rose and Crown, and inside is A/C but if you sit outside to watch illuminations, its not of course!!
MGM - all the places I can think of are a/c
MK - all a/c except maybe Caseys? Does Casey's has an indoor seating?? I know I've gotten a hot dog to eat while waiting for a parade, but I'm thinking its a/c where we order the hot dogs....
hth
I know I was shocked when I finally found Flame Tree, after reading the reviews here, I couldnt wait to eat there - hah not when I saw all outdoor seating, we high tailed it right back to Tuskar House - the food was fantastic there - just no BBQ!!