So, logistically, what's going on here?

Impact

Can Rand leave to pee when someone else is talking? I don't think so. And while the poor people up front and the Senate staff probably have to stay, I know they get to walk around, maybe even outside for a smoke break.

Bottom line: I'm whipping out my Penguin volume of Parliamentary Procedure and finding something to break the monotony, but not the filibuster.