I start local and work my way out. Does your county have a website that shows campgrounds? How about adjacent counties? After that, I start looking at state recreation areas and parks. As I’m not too far from a state border, I look at the adjoining states as well.
In my area, most state parks that allow camping have separate areas for RV vs tent camping.




There’s not a lock, but you can adjust the tension on the thumb slide and thus cause the slide to require more force to open. There’s a video on how to do that here: https://www.youtube.com/watch?v=aQ-atBnbQ7k
I don’t think it will open on its own in your pocket, but if you left-pocket carry, I can certainly see it opening accidentally when you’re putting something _into _ your pocket.