If folks can stand another comment about lawn chairs parked along the flight line with no owner in sight, I'll add this: Aren't they actually a bit of a hazard in the event of a sudden storm? Unexpected high winds are not unheard of at Oshkosh, and I really wouldn't like my airplane to be downwind of a hundred or so bouncing, flying lawn chairs. Isn't that reason enough to ban unattended lawn chairs?