Ok, I basically love talking about restaurants at EPCOT. I recommend to people that they consider what they have locally before making reservations. IMO the Disney food will at least measure up, if not be better. For you consideration: if you live in the MidWest by a Morton's Steakhouse, you'll be comparing your steak to Morton's that you have all the time (and who wants to think, might be better at home).
San Angel Inn is truely a gem. Very good mexican food, some of the dishes are what you'd expect to see on the menu at a local restaurant, only way better. I really do like the atmosphere too. Try to request a table further away from the shopping area though. You literally cannot go wrong. The house margarita is heavenly.
La Hacienda De San Angel is a more adventurous twist on Mexican food. I've only eaten there once (we shared the Parrillada) and was totally blown away. It's more authentic and differernt at what you'd get at home.
Bistro de Paris is amazing (even just only for the desert cart). If you like French food, it is very well cooked and presented here. The prix fix menu is a very safe option if you're not used to French food. The atmosphere is truly sublime.
I've only been at VIA Napoli once, but was quite impressed. I had the chicken parm. Outstanding. The preparation was on a bone in chicken which I have never had before, very good. I'll be back.
Tutto Italia is fantastic. I usually get the lasagna. Very creamy, I'm positive the noodles are prepared fresh in house. Service is truly world class.
Both of the Italian restaurants can be very loud, but service and quality more than make up for it.
I have eaten and Le Cellier and do think it's outstanding, but for two
DDP credits, it's becoming overpriced. Also, in Chicago, we have some amazing steakhouses. THOUGH, their desert is amazing (yes, chocolate whiskey cake)
I always intend on eating at Restaurant Marrakesh and for what ever reason it never happens. Every trip I do have lunch at Tangierine Cafe, worth it.
Hope that helps!