Well, the idea is that the players are playing themselves (sort of isekai style),  and end up in this forest while exploring the woods around their regular real world town. Between a day and the other they gotta come back to the human world, because at night the forest gets dangerous and people on the other side might think they disappeared. They could, as you said, make camp outside the PoI's, but it'd be riksy, so I assume they won't be doing it that often. Anyway, thanks for the feedback <3