I don't like the idea for this at all. I don't know what it takes for a parent to decide to send their child to away for a couple of months to fend for themselves without adult supervision. I know there were adults on the set, but that doesn't substitute for a caregiver who guides them and teaches conflict management. Not to mention that this was filmed during the school year, and obviously without tutors (i.e. it is not a homeschooling situation).
I have a very independant 7 year old, but I am guessing that if I sent her off to something like this, she would come home completely unmanageable. I can just see it now: "I can live by myself, why should I listen to you!".