I thought that this would be a good subject having just experienced this. Some shelters are party hangouts and jamborees on weekends and should be avoided by campers.
The Ed Garvey shelter had 2 young adult groups (approx 12 people) & 1 girl scout troop IN IT with 3 boy scout troops tenting around it. Needless to say I camped across the trail and far away from them (illegal in Maryland). So much smoke and the endless screaming.
Hey, I was a scout many decades ago but in this enlightened age, don't they teach responsibility and respect to others and to nature.