Hi, Deb!
First, I have to say that my family has not dined at RFC at either DTD or AK...BUT, it is a chain, and there used to be one near where we lived, so we have been to that one a few times. We did not like it...not for the food, anyway. The atmosphere is very cool! There are different rooms throughout, with many animatronic animals, and an occasional thunder storm (this can be scary for litle ones, so if you have someone in your party who is afraid of thunder and lightning, avoid)!
The food always sounded so good on the menu...and then when it was placed before us, we'd be like "wait, this doesn't look like what we ordered." It was always a big disappointment, and an expensive one, at that. I think they have pretty decent burgers and sandwiches, if that is the kind of thing you're looking for. If you have an RFC near you, give that one a try. Personally, we save our meals in WDW for restaurants we can't experience in other places. If you can't experience it anywhere else, and that kind of atmosphere sounds cool to you, go for it! But I recommend keeping your expectations for the food pretty low, then you won't be disappointed.