If we could see a video of the Roman senate what would the senators demeanor and physical actions tell us about them?

I’ve seen movies where the senators are portrayed as very regal acting. How did these men walk? Were they extremely civil, or drunken? Do we have some quotes from Cicero, et al that can give us a sort of video of a senate meeting?

How different are we? How different is our senate? Would the Roman senators arrive in the fanciest cars, wearing the best clothes? If we made a roman senator a US Senator, how would he act? Would the other Senators be at a disadvantage or a significant advantage? How far have we come on a interpersonal level since Rome? Surely civility has increased, right?