Last year I reported a national park site where a noisy party was still going on at 1 AM to the park night number. The operator asked if I had reported it to the loop host, and I replied that the site was the loop host's. A few minutes later a park police SUV pulled up and shut the party down. The next morning two park rangers showed up and soon after the host started packing up. One of the rangers stopped by my site later on and told me my call was strike three for that host. A few days later a new host moved in. A very quiet one... ;)