Why Won't They Sit And Watch A Movie!?

I have had a movie club going since the Movie pack came out and I am finally over it completely. At max, I can get two of them to sit and watch. The rest stand in front of the sitting sims like a bunch of plums even though there are plenty of seats. I even added more couches and chairs at home and there are plenty of seats at the theater I built. No dice. Two will sit, everyone else stands. And it happens that way with anyone I tell to watch a movie, club or not. If I tell them to watch a show together afterward, they all go sit down. This is annoying! On top of that, if I tell them to sit (if I can control them) they will do it, then stand again after a few seconds.