Park ranger. There are two kinds: chill and friendly, or the kind that make you show all your documents, prove your park stickers are valid, make you repark your car, and then scold you for being too loud even though the next nearest campsite is several hundred feet away and nobody has complained and you arent even being loud...
Nope, no music or media. Just sitting around the campfire telling stories and laughing. Sorry, but 9pm is not late, especially when quiet hour isn't even until 10 at that particular site.
I don't care that you like to get up at 5:30am for your morning run, I'll be totally quiet when the actual park rules say I have to be.