Even if measures are taken, you're still sitting in a room a hundred or so people are sitting in, you're going to be in there for 2+ hours, and there's a group of another hundred people before you who also spent two hours there, all the way back to the cinema's opening time, and the day before, and the week before that, and so on.
It's not a great idea, even if you do wear a mask the entire time and don't have snacks.