Its a good game, personally, I wouldnt rate it higher than a Good Adventure game. You dont need to like Disney to like the game. But if you do like Disney movies, you should enjoy walking in each of the unique Disney worlds you visit.
I didnt enjoy the Camera so much, dosent ruin the game, but does make it less enjoyable, mainly when Goofy and Donald come in, then the camera goes all over the place.
All in all, get the game....if you really want to. I could name a number of games doing a better job at what KH is trying, but KH does it well all the same.