cpotisch
Engineer
If you want them to enjoy your sleeper, change your/their reservation and add them to your sleeper ticket. Having passengers who aren't sleeper ticketed hang out in the sleeper car can cause confusion with the diner staff (the DC staff might assume a person gets free meals if they came out of a sleeper). There might be problems with 'visitors' accessing the showers or beverage stand. It's just a liability for Amtrak for passengers to just let any one in.As a sleeping car passenger who has paid mightily for the "privilege," I should have the right to invite and accompany a coach passenger to my room. Not to use a bed, but maybe to just sit and talk, share a drink, play cards, etc. Usually this is not an issue for a SCA; in fact often they are not even aware. A couple of times it has been an issue. I asked the SCA each time to go get a "supervisor" so we could resolve it. Both times, that request caused the SCA to let my guest pass. YMMV.
Sometimes you just have to stand up for what you believe to be your rights. There are plenty of SCAs who are not on ego trips. A few are.
Have pax meet in the lounge, and everything becomes so much easier.