>>213037594Untrue, many do see the film, it varies from actor to actor, and from contract to contract. Even if it's a bad film, the actor may have had a good time making it and will watch it with the cast and crew at the event.
Now for when you're doing a full press tour for a big movie and you've got premieres in LA, New York, London, Berlin, Rome, Seoul, Tokyo, Sydney over the course of a couple of weeks, yeah you probably are going to the bar or to the hotel while the film is on and coming back for the afterparty.