Comment by professoretc

If you want to know what flying first-class 50 years ago was like (and you live in southern California, and you have money to burn) you can try the Panam Experience (https://panamexperience.com/). It's a replica of a Panam 747, together with a "crew" in period-correct costumes, that tries to recreate the entire experience of flying in the 1950s. (Bearing in mind that the plane is a replica, located on a soundstage.)