First I don't think the counter svc restaurants at the 3 monorail resorts are tempting. They are cafeteria style unless you want sit-down. I'd stay put over going to CR, Poly, or GF, and I've eyed all those resorts CS food. Personally, we really like Cosmic Ray's chicken Caesar salad. It's a deal compared to restaurants like TGI Friday's. Everyone can find something they'll eat, even if it's just a burger. If nothing else, have you tried a Casey's dog? This is a definite "don't knock it til you've tried it" item. Yes, $4 is steep for a dog, but dogs like are hard to come by.
To get to other resorts it's too much of an effort unless you want a decent break from the parks and/or you want to hop. Maybe going to the GF Cafe would be worthwhile if you want an excuse to visit the GF and to leave MK. Before I did that, though, I'd try to get into the Plaza Restaurant on Main St. The atmosphere is Victorian decor, and the food was really good when we went in Nov.