The River Belle Terrace has two entrances, I came in the back entrance from Adventureland but the main entrance is Frontierland right in front of the Rivers of America. You can sit out on the patio and watch the boats go by or there is a gorgeous dining area inside. Given the heat, I was staying inside.
I personally love the wallpaper, it's a combination of birds, flowers and baskets. It's got a french country feeling and really compliments the surrounding decor. It's a really nice place to just sit down and relax in the air conditioning on a hot day.
I didn't come for the food, but I did take pictures of the menu and prices. It was so hot outside that I was really just stopping in to feed the baby and he doesn't eat sandwiches and salads.