The restrooms are big and the adjoining hallways. I'm not sure whether & how the cars may vary, but our experience on the River Runner (across MO) was: 1) boarded in Kirkwood and half the seats face forward and half backward, with the forward-facing mostly full, so we went to the next coach and most seats were empty so we were fine; 2) seats do not recline; 3) seats seem somewhat hard at least after a while, so bringing along a pad may be helpful at least if you are very "lean"; 4) plugging in a cord took a bit of looking closely to find, and our device's plug didn't fit because it is elongated and (tucked deep between seats) the plugs didn't allow enough space for that; 5) apparently Union Pacific rule requiring lots of cars for sufficient train length (such as two unused baggage cars and several coaches) means some empty coaches most days, so seat sharing, lying down across seats (as I did for a nap), etc. never are a problem unless I suppose ornery staff want passengers in just a couple of cars so staff have it easier overseeing everyone, but our trainman was not like that, so when we asked about going beyond that crowded car and having a forward-facing seat and more space, he happily said "Oh yes."