You are probably more safe being off to yourself somewhere then sandwiched between 50 trailers in a camp ground.
We get back off the power grids alot in the Natl Forest areas and have never felt unsafe. The few people you may run across are doing the same thing you are...
Also we have found an unwritten rule that most campers all look out for each other pretty good. I will approach someone in a heart beat if they look out of place.
Never really camped on private property much by myself but have been in small groups usually doing private campgrounds fishing...
Have never camped at a loud NASCAR place either - Now this too me would be a possible unsafe environment I would think... Too much wiskey going down there along with wild parties from what I hear... No one sleeps so maybe that makes it more safe???
Roy Ken