It's their bus, they can do what they want..you could sit in your car all day in a parking lot with it idleing..It's a free country..the ski areas should be grateful for the bus companies bringing the skiers and riders who don't have cars to the mountain..
That's the dumbest thing I've heard. So I can go park my car in your yard and run it all day because it's a free country? Ski areas, towns, counties and states can all regulate what you do with that bus when it's on their property or jurisdiction.