My parents went a few years ago and loved it. They will probably go again this year, and DD7 and I may tag along. DH has no interest in going so we'll leave him by the pool or at the bar.
Remember, it's not just brunch, there is entertainment, too.
Since you haven't had alot of response yet, I'll chime in:
We did this several years ago. The entertainment portion was okay (but it was certainly LOUD), the food was pretty darned good (when you could get to it), and the entire event was IMHO worth the price. We haven't felt a need to go back, but were glad we did it at least once, and while it isn't very high on our list, we have not ruled it out.
As others have said, it's a meal and a show. If you find no value in the show portion, then it probably makes for an overpriced meal.