I just finished watching the clip
here. If I rented this game, I don't think I'd get very far because I'd be beating the crap out of all the piñatas. They seem like they'd warrant a good beating because all of them annoy me. However, it'd be cool if MS has some sort of promo where they include a free piñata (full of candy, of course) for the first 1,000 VP games sold.
A lot of parents are going to go through the 360-craze this fall when the show airs. This game, as ridiculous as it seems, will be another system seller for MS.