You are a real fan! This is the Amerian Thanksgiving weekend so Tremblant will try to open. But last year there was no snow and so they delayed the opening to Dec 8. We are going up Nov 28 cause I am going to the ski Convention Dec 1 2 3. I hope there will be snow then. They can make snow if the temperature is less than -5 for a week for you need the ground to be cold too. There is still a week to go.
If you go to the website of tremblant you can see the webcam and there is lots of snow on the north side down expo run and at the top. Ususally they open the north side upper half run first so there is possibility that they can open Nov 25 as forcasted Do not despair! There might just a few trails and you might have to upload and download but that is Tremblant / Eastern skiing at its best in Nov!