Well, that was interesting. It seems like we were camped next to a stupid convention. Three campsites near ours were camping together. At 10 PM, when quiet hours are supposed to start, the party was just beginning. A loud, drunken, obscenity filled party that went until 4 AM. At midnight, I went and had "words" with the group. They had let their dogs run free and into others' campsites. One was barking non-stop outside of our bunkhouse window on the trailer. My wife wouldn't let me go out and confront them as their party got louder and louder around 2 AM. She thought I was too angry and these folks were obviously too drunk -- not a good combination. I have never been around campers that inconsiderate and obnoxious. And no, they weren't kids. They were all in their late 40's and 50's.
Lesson learned -- make sure I have the overnight phone number for the park rangers when I check in.