MUSS ought to be able complain about it, especially on a BYU fan site, it isn't like he is running smack on UFN.
Additionally, and I know I am going to get called out for this, but tail-gaiting is ridiculously overrated. Nothing like hanging out on the asphalt for hours with a grill and some lawn chairs. I've even seen the deluxe Winnebago with canopy and flat-screen version and you are still just hanging out in a parking lot. The only way this activity is tolerated by anyone is copious amounts of cheap beer. Maybe the Church could create a special dispensation for beer and the parking lots near LES on gameday so that the tail-gaiting could really pick-up.