I love our forest service campgrounds. But for years, you rarely see a ranger. We were just at a COE campground last week. Same thing. No one at check in. No one ever came around to check if I had a reservation. The only ranger I saw was when I was walking my dog around the visitor center. I too suggest charging for some of these no fee campgrounds. Even at a night would help.Same with back country camping. Some state parks don't charge for people to swim in the lakes. Luckily our state of Pa started up dating campground facilities a few years ago so our state parks have a lot of new bath houses but even in them,I rarely see a ranger drive through.