I don't know if customs or rules had or have been changed but years ago I had the opportunity of visiting. both RMS Queen Mary and SS France when they were in New York between sailings. Of course things might be different during an actual voyage and there were no rules to the contrary if just visiting, but visitors had free rein of the ships and you could explore just about any and all areas and all classes.......Which I did.I was shocked too, to find out that anyone can explore first class before the voyage. Not sure about 3rd class passengers though?
Differently she was seeing her friend off Mr.Beesley. She left the ship; not as a passenger, but as a on looker. I recall reading article on here and on FB.
I remember there was at least one steward who seemed to be happy to give the visitors directions to places they wanted to visit on the Queen Mary.
I wanted to see a particular cabin and he gave me detailed instructions as to how to easily get to it.
But in the words of Paul Harvey "......and the rest of the story..." I am afraid it had the opposite result. My look at that cabin turned me off. Story about that was on another thread .LOL
I, too......." Left the ships ; not as a passenger, but as a on looker ."