1. Those people who backpack into a place with a large group of people just to get smashed and tell and vomit through the hole night. I am the guy who then wakes up at 6 and makes as much noise as possible to tear down my camp before starting for the day smile

2. Those people who arrive at a other than your group empty back country camping area and choose to camp right next to your area.

That's all I got. But others have been spot on to