Firstly, I DON'T WANT TO BE IN IT. I'm just curious.
The only reason I'm asking, is because they all seem to have known each other for years beforehand. Does this mean that they were looking for a group of 'friends' (I use that word loosely) who lived relatively close to each other, or did they audition seperate people? Also, if they chose the friends option, what if one of them didn't fit the stereotype? Would they just not have been included?

Sorry if I'm missing something obvious.