Yeah that looks rough but a bunch of fun! One of those you think your prepared..... But your not.
They were doing something similar to that in north Texas, triple C range closed and I don't know what happened from there. They were year round, so it could be cold (not Finland cold) and hot as hell.
I might want to do that if after the shooting there were a lodge room with huge fire, individual down sleeping bags, hot soup and Manhattans available right after.