How are the seats? If I was going with someone can I pull up the armrest between the seats?

Yes

Yes. This location has adjustable arm rests for their loveseats. They also have an adjustable tray.

You can, but you have to make sure you order the right seats. The seats are shown online in groups of two. The two seats shown closest together have an armrest that folds up to make a love seat.

Generally no, each seat is a recliner but I do think some theaters there have love seats in the front.

Yes the arms can be pulled up between seats.