I bought this game after going to my local Zumba classes. I couldn't afford to keep paying for several classes a week so this was the perfect solution.
Although I have never danced before I joined Zumba, the moves are so easy to learn that I am sure anyone can pick them up. And the music always has a great rhythm to it, so it's easy to shake your booty!
The only downside I would say is that in the Zumba classes we dance to songs in the charts as well as the official Zumba songs. So far from using the game I haven't come across any pop songs. But the Zumba ones are still good.
Unlike other users, I haven't had a probem with the belt, it seems to fit fine and just moves a little but doesn't hinder me. I have also played the game on the Xbox 360 and it didn't seem to pick up any more moves than the Wii, and that doesn't have a belt.
All in all a really fun workout game for people that love dancing and want to work up a sweat!