I've watched that show several times, mostly to roll my eyes and laugh at how stupid the contestants are. I've seen a couple of shows where people got badly sunburned, got hurt, got sick, or couldn't mentally handle it, and were taken out by the film crew.
Back in my youth when I was an experienced and strong camper/hiker/skier, I could have done it but these days? No way!
Since the contestants can bring one thing with them, I'd chose a cooking pot with a lid so I could boil water and cook things to eat.