For those who have asked about couples, I would recommend that the next time you are in you ask for the couples room. That's where you will find them. We have seen as many as 20 couples on a Saturday night. We have also seen as few as three, so you can never be certain. But most of the couples do not hang out in the main theater. Some do for a while, but eventually they seem to make their way to the couples room.
Yes, you will also see people with different preferences, just like you do when you go to the grocery store. Relax. Ask the staff for an overview and enjoy yourself.