It's looking like Sunday could be a great day.... it's going to snow hard on Saturday which means the alpine might be closed on Saturday, so it will be fresh for Sunday.
Meeting point: outside of Guest Services in Creekside (not Whistler Village) - there is a bench just outside of the door (it's same building as the ticket booth)
I think Sunday is going to be super busy, so I want to be in line early. It starts loading people at 8:15 I think.
If you're a beginner, you may want to make sure you have someone to ski/ride with so you don't end up by yourself.