Directors need real strangers to watch their films before they finish them. We put on the cinema, you turn up, you watch something months before it reaches anyone else, and afterwards you tell the truth about it on your phone. Nobody ever knows which answers were yours.
Not a trial, not a discount. A free seat at a real outdoor cinema, with popcorn.
Films months before release, sometimes before they have music or colour. Almost nobody gets to do this.
Your answers go in without a name attached. The director never knows who said what.