Every year you are able to purchase discount lift tickets at 7-11 - I'm sure it will be available this coming season also. The catch is - you can't get them anywhere North of West Vancouver - so make sure you buy them in the city before you head up.
Also - food and liquor prices are astronomical during that time - if you have a van and you are planning on purchasing groceries instead of eating out all the time...shop in Squamish.
I go up a few times a year - feel free to drop me an email and ask any questions.
BH