The sequence is rendered. Took a few days.
The square patterns on the ceiling are still there, but a little less noticeable. There is some pumping on the door. There is a reflective shader, maybe it's causing this?!
I decided to not touch the glasses. The mentioned black refraction looks not correct, but the alternatives I showed don't look correct as well, plus there are five different drinking glass objects in the scene, and I didn't want to edit each of them. So, I'll wait until Matt has fixed this refraction issue.

I didn't want to put the movie in the Animation thread, because I think it belongs to this one here. It's just a simple camera move, but it breathes some more life into it, I think.