At least our Empire Builder sleeper car did for most of the trip from CHI to PDX. The car attendant announced a plumbing issue the first day and locked the restrooms, telling us to use the facilities in adjacent cars. That was inconvenient, but the real unpleasantness was the smell that began to spread through the car soon after the toilets were closed. I should have asked them to move me to another car, I guess, but I did not think of that. I know that they would have fixed whatever failed if that were possible, so I did not complain at the time. Will AMTRAK give me a voucher or something if I complain about this?