I saw a bit of it when it was on ABC tv a few months ago.
I think for kids who are totally out of line it would be worth a try. I don't see any harm in teaching them that they do have to follow rules and that there will be consequences if they don't.
The kids on it are teenagers. They have consented to go and they aren't just 'brats' they are really full on.
I only watched it during the ads while I was watching something else

so I'm not sure about all of the stuff that they did, but some of the kids seemed to shape up pretty quickly and got rewarded for it. You could just see how proud of themselves they were
There was one girl who used to just throw used sanitary napkins and stuff on the floor, refused to flush the loo told her parents to f**k off and slapped and spat at them.
I honestly don't see how a bit of camping outside is going to harm them. If they did the right thing they got to sleep in the lodge.
My only doubt would be whether it would make any difference to their behaviour when they got home.