Whistler is truly a four season playground. There is always something to do there.
Whistler actually gets more summer visitors than winter. Summer visitors can golf, fish, swim, windsurf, boat, bike, hike on the lower altitude trails, ski on the glacier, etc. There are museums to visit, outdoor music festivals and other cultural activities. It's really a bee hive of activity.
I can't see to place the timeshare that you have on hold. If I recall, I think it is the one that shares space with the Pan Pacific hotel. If that is the one, the location is just metres from Whistler gondola and is in the village, but borders up against the mountain, so that there are no loud restaurants or bars that are adjacent to it. So noise wise at night, you will be fine.
Whistler can be as much of a party town as you want it to be. If you are headed there for the outdoor activities, and are like me, by nighttime, only the hot tub beckons. But for younger folks or those with lots of energy, there are bars and live music venues dotted around the village.
The very condensed nature of the car free village centre creates a lively atmosphere. Restaurants set up patio dining on the terraces and people eating there or waiting to get in have conversations and walking through the crowded village can feel like walking through a party. It can get busy, but then you can always retreat to the quiet of your timeshare. Whistler village is a great place for people watching.
Also, if you've never been to the area at all, as in never been to British Columbia, allow yourself at least three days in Vancouver, and possibly add in a few days for a beautiful ferry ride to Victoria.
