Most of these reality TV shows ARE scripted. That is the sad truth today in TV, 2nd takes, clever editing to make characters fit, staged accidents... They found out that if you try to make a non-actor read lines, they sound dumb. So instead they give them a general theme, say guidelines on how the episode is supposed to come across then let them ad lib. This way the directors get what they want without making the show seem completely scripted.
I'm giving the show the benefit of the doubt simply based on their work prior to this reality show. If you have never worked with uppities, they want it all at the snap of a finger. If you told them their 50K tank could not have fish for 2 months, they would move on to the next guy who WOULD stock it. Image is much more important than some spare change for new fish..