We camphost at a state park and last year, we had several large family groups come into the park and we were FULL. Many of the groups came in on Thursday instead of waiting for Friday. Sites are reserved, but not site-specific. When the large (5 sites) Jones family showed up, the Smith family, Roberts family and Rose family (all made up names) had already picked out their sites, so the Jones family had to take what was left and they were scattered throughout the campground. This upset them. They were all tent camping with the exception of one popup camper. They set up a large pavilion tent in front of the popup and that was where they gathered. On Friday night, there were no complaints made to us, but they went to the office to the ranger. On Saturday night, we stayed outside and carefully watched the campground they were in. About midnight, we called it a night and headed in, but at 12:30 or so, there was a knock on the door. A couple had walked up and were complaining about the group doing karaoke. Yes, karaoke after midnight. I called the ranger and he drove up to our RV and we walked across the hill to see if we could hear them. We could, since they had microphones and an actual karaoke machine! So could everyone else in the campground. They sang and then would clap and yell about how good that song was.
That was one night we won't forget! and I'm not sure that I want to experience anymore music in the campground now.