Every MK game has a Bowser's Castle level...it's always my least favorite in the game, at least until I race on it 30 times to get the hang of it. In contrast, my favorites are always the ones with traffic (Toad's N64 level, Moonlight Highway, etc.) because I'm pretty good at navigating around it.
I don't like Rainbow Road in this one either...I can't hear the theme anywhere and they actually made it pretty hard to navigate.
