Good question about cold temps. I've always poked my head into a ski patrol hut. Ski right up to it/ski out of it. Usually no other guests. Plenty of warm and comfortable places (lots of huts have rigged up heaters for gloves and coats and such). If I'm solo its nice because they're usually happy to check you out for frostbite. I've had a lot of good talks with patrollers this way. I've gotten some odd looks when I ask if I'm welcome just to warm up but no one's given me the cold shoulder yet.