First tracks is always worth it, of course better with a heavy snowfall, you've come a long way so max your hill time.
Definitely do the peak to creek run but don't waste it on a powder day.
On powder days stay at the top of the mountain in the high alpine and the bowls on the whistler side, or blackcomb glacier. Seventh heaven is a must do as well. Symphony and harmony also great.
Often the Alpine won't open straight away on a pow day, so hit what you can while you wait for it to open. Hope like fuck your timing is good and go for it!