+1. I wear earplugs at home as well. I don't sleep well in general.

The OP mentions calling the police: Would they have done anything in this instance? Since it was a privately owned campground I assume they'd just deferred to the owner. I doubt since it was outside of Rochester and not in city limits that there weren't any legal noise ordinances.

I tend to ignore loud neighbors on camping trips. My biggest annoyance are dogs that bark of all hours of the night but I've never complained. Otherwise the loud neighbors are a part of the experience and they've never been loud enough to bother me. That or they quiet down before too long.