I have quite a few first hand experiences of reality tv. My wife applied to go on house hunters a while ago, you need to already be in escrow to go on the show, then you look at 2 houses that are not yours, then the one that is yours, 100% fake. A friend went on the show Trading Spaces. It is also 100% fake, where you pretend to do some renovation for a minute, then the camera cuts out and a crew comes in and finishes the job. Another friend was on one of the early 2000 MTV shows where a girl dates 2 guys, and then chooses one (or the inverse), I cannot remember the name of it. They are not given a script, but they are told what to talk about for the whole show, and people are intentionally made to look like the heel.