it is sketchy depending on the time of year.
last years tons of peoples shit got stolen, peoples car windows were getting smashed out, someones car even got lit on fire if i recall correctly.
i may be wrong, but i'm pretty sure you can stay in their parking lot. at least for a little while, maybe not all summer.
and if you cant stay there at all, just go to a camp ground. like i said there are a shitload of them around there and i dont think any of them are over 20 bucks a night.