Just got my hands-on impressions of the game up.
http://gamrreview.vgchartz.com/preview/45674/donkey-kong-country-returns/80659/
The full game will allow you to hold the remote sideways instead of using remote/nunchuck with a bit of waggle for some of the moves, but the latter is the only option we had for the E3 floor demo. I honestly didn't think those controls were a big problem. But given the option, I'd go back to the oldschool controls becuase those are the ones I've already MASTERED.