I skied 4 times in Tremblant this year (Nov 24, 25 and Dec 18-19) and you should know that conditions are not as good as in past years. They need snow badly, like everyone else in the East. However, don't despair, things are getting better rapidly and I am sure you will have a good time.
Saffron_boots is right, Tremblant is true East cost skiing, often on the hard and icy side. His hint (North side in the morning, south in the afternoon) has omitted the Versant Soleil (Sunny Side), which is exposed to the sun most of the day.
As for terrain, it is hard to make any comments, as there is a strong possibility that many runs will still be closed when you arrive. To summarize, the South Side has easier runs on the skier's right, which get more difficult towards the skier's left. Versant Soleil is a relatively new addition of 15 runs which are relatively narrow and funky, in the Eastern tradition (but not very difficult). North Side has more difficult runs in the middle and easier to the sides. Dynamite (and nearby expert runs such as Expo and Cossak) are north side runs that start at mid-mountain, but they are serviced by a detachable quad. Geant and Duncan are top-to-bottom north side cruisers for advanced-experts. Then there is the little used "Edge". The Edge is serviced by a slooooow quad and it gives access to several ungroomed runs and trees.
Apres-ski in Tremblant is better than most North American ski resorts. The village is nice (a mini Whistler if you wish) and the restaurants and shops are quite pleasant. The Quebecois culture is open and very liberal (I lived in Montreal for 18 years and my wife is a Quebecois), but language has been an issue in Quebec's history. Fortunately, Tremblant understands that value of tourism and since Intrawest took over, I never experienced anything but excellent service from everyone.
If there is any negative, it must be the crowds. Expect some crowds during the holidays, especially if all runs are not opened. This inevitable result of success is the reason why grooming at Tremblant is absolutely necessary. At times you will find that by mid-day easy runs are bumped and very icy from the heavy traffic of skidders and scrapers. Advanced runs last longer due to less traffic.
Anyway, I hope you have a great time and a great holiday season. [img]smile.gif[/img]