I do not recommend going to Mont Tremblant to do the alpine ski because of the multiple problems with their chair's lifts.
This 2008 year the chair lifts had not been maintained well: 1 chair lift stopped for 6 hours and the people had been removed from these chairs on the ropes.
Another chair's lift stopped for 1.5h, fortunately, it had been repaired after 1.5h. The stuff said that this lift had the mechanical problems.
I think it is unacceptable to keep people so long on the chair’s lifts