I was personally disappointed with the Warioware multiplayer as you have to pass the controller around for the most part, which if you think about it you have to undo the wii strap then hand it to the person so they can put it on.
Why they didn't make it like warioware on the gamecube where everyone can use their own controller i don't know |:
Although saying that the one player is bloody excellent and you could easily take it in turns, but if you're looking for multiple controller use probably not the best game for it, (just my opinion though).