Pros:
As other folks have mentioned, Whistler is very scenic. On the way to the course, I came face to face with a black bear. Definitely increased my heart rate (I was alone).
There are 27 holes, which is a benefit. There are several types of shots, uphills and downhills, although most of them are short and technical. Given the dense woods, there's not really an opportunity to create big bomber holes.
Hole 16, perched on a rocky outcrop, is a killer little hole.
Cons:
It was not easy to find, but folks were very helpful.
The power lines detract from the scenery. It was also crowded when I went, but that's not always a bad thing. Folks helped me find the next hole etc. and it was indicative of disc golf's growth in the area.
The area was heavily abused by people--numerous signs of erosion and damage to vegetation.
On a couple of holes it was tough to figure out where to tee from--there are multiple tee pads and even some "local" tees.
Be sure to bring lots of bug spray if you're one of the people that is bitten by flying things...
Other Thoughts:
I've played several courses in BC and this is not even in the top 5. While Whistler is a killer vacation spot, this course has seen better days and is somewhat limited due to the forest.
Having played both Kamloops courses and Clearwater, I'd put them way in front of this one. But if you're in Whistler, this is a good way to get your disc golf fix in.