I've wild camped for years. Comes with long distance backpacking and bicycle touring.

I've never run into an issue, but I tend to be discreet. Find a place where I don't expect anyone. Don't use any lights or make any sounds. In and out before sunrise etc.

Personally I could never use a "real" camp ground. No ****ing way am I going to pay someone to sling my hammock up between two trees. Stealth camping all the way.