American reality show...
Each episode features
Their task is to survive
"Thay get to know each other
" a typo in Thay, I suppose? Or perhaps the writing came from a cellphone and the spell checker has betrayed you.
Thay get to know each other only on the first day of the show . After know each other they are taken to a point set  by the producers of the show on where they will have to find water, food and shelter by themselves out of the nature.
They get to know each other on the first day , that takes place in a designed point in which they meet, then they have to survive by their own, by finding water, food and shelter in the nature/in the wilderness.
 don´t need of a repeat, at this point we know already that is a reality show
 most of the show features are thought before by the producers, the designated point of meeting included.
Your piece of text is good, it expresses a lot, I just came up with some new ideas that would improve it. It´s my thinking here, so others may think otherwise or in new ways. All in all, there was little to be improved, congrats on your skills.