This is why the "no alcohol" rule is effective. Quiet is subjective, alcohol possession is objective. And you can always bet of their is obnoxious behavior, there is alcohol. Then it is easy to evict the offenders for breaking a rule...possessing alcohol. If the offenders are especially obnoxious, the local law enforcement could pay them a visit. The threat of visiting the local jail usually has a sobering effect, if not then the ride in the police car usually quiets the offending person and the rest of the group still left in the campground.