Although Shakespeare was being metaphorical when he wrote "All the world's a stage, and all the men and women merely players", the makers of reality TV have been doing their level best to turn his poetic observation into a statement of fact.
Few aspects of society have escaped its cameras' hungry gaze and its essential unreality has long since been acknowledged. (When the people are referred to as "characters" and often disparate events are cunningly edited into coherent "storylines", it's pretty obvious "reality" is being used in an ironic, if not Orwellian, sense).
How actively onscreen participants collude with programme makers in turning their lives into the stuff of entertainment obviously differs between shows, but I tend to assume anyone agreeing to being followed by a camera crew is giving an implicit undertaking to behave in a way that makes their presence worthwhile.
The main problem for those in the reality biz is finding a profession that includes co-operative individuals and hasn't already been picked clean. As such, I can only imagine the excitement when it occurred to someone at Greenstone to make a programme about amateur dramatic societies.