Wine Country Trattoria is perfectly fine.
It is comfortable, you can make a PS, which is convenient on a warm, busy day, and it is air conditioned and lovely cool inside.
I find the food to be too heavy for lunch. However, being middle aged and grumpy as I am, anything more than a tuna on rye at noon puts me into sudden, irresistible nap mode these days, so you probably shouldn't listen to me. I would put the Trattoria on par with Olive Garden--absolutely adequate, nothing special, basically overpriced, you can make a better meal at home with Costco ravioli and Paul Newman's canned sauce, but who has a saucepan on vacation?
Now that I have assumed the role of know it all in the matter of PS lunches at Disney, my preference is for Carnation Cafe. The menu is much better suited to a midday meal, and it is cheaper.
But, like all the other posters have said, WCT is perfectly fine.