Disney's Party isn't a bad game, but it is flat and uninspired. It's a cheap version of Mario Party aimed at the younger generation. It's just surprising that the creators of Mario Party are able to make a party game that feels so stale, but perhaps they've been at the game too long, or saving the good stuff for Mario Party 5.
When a game has to con you into thinking that it's fun by repeatedly having characters belt out variations of "This is so much fun", it's a sign that there are problems at some level -- because Disney's Party is anything but a lot of fun. This is further emphasized by the all too similar mini-games. Disney's Party lacks diverse and fun gameplay -- the very nautre of what a party game should be, making it a title that should be rented before purchasing -- and that's only if you're a die hard party fan. Make sure you have a steady stream of friends or younger gamers to play with if you decide to take the purchasing leap, because this title gets old quite fast and will be collecting dust long before it earns its keep. It's best you just wait for Mario Party 5