I can't speak for the other places, but I did the River Belle Terrace package a few weeks ago and very much enjoyed the food there. I had the corn chowder, the fired chicken sandwich with baked beans and seasonal vegetables, and the "Dragon" desert, which was the highlight. It was a very filling meal, but very sweet too. I don't just mean the desert either, which was lightly sweet with a little spice in it. The barbecue sauce for the chicken was quite sweet, and the beans, oh my, the sweet beans! I know we southerners have a reputation for putting sugar in all our cooking, but I've never had beans that sweet! Now, I'm not saying they were bad by any means. They were delicious, but heavy. I balanced it out with the vegetables, because, hey, you need to have some real food at some point. It even had brussels sprouts, which I don't like, but they were on the okay side. It curiously came with two-and-a-half baby carrots. One was literally sliced vertically to have a flat side. It was just something I found odd.
At any rate, I do recommend RBT, not necessarily over the other venues, but I don't think you'd be disappointed.