Whoever said "if you are 15-19 go to cafe de lepoque, 19-25 caribou 25+ shack is sooo wrong..
it depends more on what you like, and first of, if you 15, forget it right away.
Its more, if you like younger girls, that are 16 years old stupid sluts, go to cafe de lepoque, if you want to enjoy a real "Ski town Bar", hit the caribou, 75% chances you cross some pro skiers, may be even behind the bar, and le shack? No one "goes out" to the shack, go there for supper for christ sake, not to get drunk/laid..etc...
basically, go to the caribou no matter what. and if you come from a place where you cant go out at 18 years old ( US-21, canada 19), dont act like a retard that is going out for almost the first time, or you'll learn how Quebecers treats english kiddoes when they`re drunk!
that was the 101 on going out in tremblant.