I’m talking about someone who has a voice or a following.
The OP is talking about someone seeing an early screening for the Avengers. If they are invited to see a screening they’re most likely a public figure so their opinion, whether good or bad, is going to be content for their profession.
I'm talking about average folks not someone whose job or persona relies on reviewing movies. Like why the hell would you go through the effort of obtaining tickets to a movie when going in you know you won't like it. You spending three hours of your day to see something you won't enjoy just so you can tell people you didn't enjoy it? WTF? Are you that desperate to enter a discussion?