Well first off, you won't meet any Canadians at Whistler. Mostly Ozzies and Aussies. We
can't afford the place!
Just kidding -- mostly -- but it is
a tourist resort. Notwithstanding BC's archaic liquor laws, there are still plenty of places to go partying. Law enforcement is fairly mellow as long as you don't break things or attempt to break people.
Don't let the partying interfere with the shredding though. The day is short enough already (8:30 - 4:30) without sleeping through part of it.