Honestly, I've never had a bad meal at IOA, USO, CityWalk and HRH. I think we've eaten just about everywhere, too -- well, not Emeril's.
NBA City has incredible baby-back ribs and a bleu cheese chicken pasta that I truly can't do without -- the pasta, that is.
O'Bryans -- get the redfish if you go, along with a hurricane, of course! The crawfish po-boys and crawfish etoufee nachos are really tasty, too.
Latin Quarter was great...DH got a pork dish, and I got a fish dish.
NASCAR place -- taco salad is awesome! Portions are massive.
Hard Rock Cafe -- everything is good!
Margaritaville -- sorry, but we only ate there once, and the service was horrible, and the ritas were watered down. Compared to a hurricane at O'Bryans, I'll take the hurricane any day! This was my only subpar experience with dining at the USO area. However, we do love to get a hurricane to go and sit in the beach chairs, people watch and listen to the tunes in the Margarita "world." We're probably biased, tho, as native Floridians...we sit on the beach, listen to Buffet and drink margaritas (strong ones we make) all the time.
The Italian place at City was pretty good. Excellent white sangria, but I'm Italian and prefer my Italian cooking
At IoA, Confisco's is my fav. The Greek place (can't remember name) and the little bar/restaurant in the tree have all been great experiences.
At Universal, we almost always eat at Finnegans -- always the fish and chips with multiple pints of Harp or Bass. We've eaten at the seafood place in San Francisco and enjoyed it, as we've enjoyed the big burger joint where the building shakes. Milkshakes are great over at the "drugstore" by the Terminator ride. We've also enjoyed Mel's Diner.
HRH Kitchen -- we enjoy their gourmet pizzas. My mom had their filet a while back and still talks about how good it was.
Bon Appetite!