Here it goes...
GP doesn't make a dime off of the hotels, but sometimes if you go through a 3rd party site you might find a better deal. Your best bet is to -
Book your hotel on the hotel website.
Grab your lift tickets off the GP site (you save $ by doing that vs going directly to the ticket window and purchasing)
the only exception to this rule is if you are participating in one of their "Family Fest" weekends and are bringing a family of 4.