Relating a very recent experience
This past Sunday, bro and I hiked over Moosilauke from Jeffer's Brook Shelter to Beaver Brook Shelter. The day started out with a light rain and got progressively worse. When we reached Beaver Brook Shelter, the tent pads were mostly snowy/icy/wet nightmares with heavy runoff streaming beneath the snow/ice. Under less extreme conditions we tent. Once we were set up in the shelter and hung our stuff to dry(?), a prep school group of 15 arrived. The leader proclaimed, "the first rule is not to invade. We will set up the tents." I don't know where she came up with that, but to make a long story short, the invasion proceeded as they discovered there was very little workable tent space. As they kept crowding more in, we decided that between the crowding and whining ("I'm cold. I'm wet. I wanna go home."), that we would be better off heading down the mountain and completing our section hike early. The leader was gracious and urged us to stay, but we offered her our best wishes and headed out. We did not feel particularly annoyed or saintly. It just was what it was and we moved on.