The overall mountain was not busy at all. Practically no lineups and plenty of parking everywhere. BUT the runs are crowded (because there's only a handful of runs open)... mostly with very beginning beginners. I rode Whistler side, maybe Blackcomb was better...Right on, I think I'm going to head up on Monday or Tuesday for my first day. I'll make sure to bring the rock board. Was it pretty busy with American Thanksgiving?
No real need for a rock board, unless you want to venture and explore, which is not very wise anyways because there is VERY little cover. So for the most part, just stay on the groomed runs and there's sufficient cover there to not need a rock board.