So unlike the Lake Shore Limited I took to Chicago last weekend, the way back was done on the Capitol Limited, 30(4). There, I met the most professional room attendant so far: Carlos. Even gave me his card at the end of the trip.
That said, it was a decent trip. Sleeping was... well, I did sleep, but for how much I don't know. I think I was woken up by the Pittsburgh stop and when it had to do a cross-track move for handing off to CSX and make a "sharp right". The mattress was firm, firmer than expected, so I was a bit uncomfortable and the lower back wasn't all too happy if I laid on my back.
The food... is described on the relevant thread.
At least nobody tried to run into us. Two sleepers, a cafe diner, two coaches, and a baggage car, with a single P40 or P42 up front... and nobody bothered the train with a car. The trip did serve a bit of double-duty because I was able to experience what the MARC Brunswick line was about for most of it's length (haven't done the Fredrick branch yet).