The CZ was another train that used the upper bar during peak seasons...drinks and snacks. Back then they had movies playing, and a piano in the lower lounge...
https://history.amtrak.com/archives/piano-lounge-in-a-sightseer-lounge-car-1980s
https://history.amtrak.com/archives/piano-lounge-in-a-sightseer-lounge-car-1980s