I must say I was inspired to take my first ship cruise based on all the times Charlie traveled by same. Of course my cabin was not quite as elegant as his usually were. I just watched CC in Shanghai and was amused by prominent sign on boat that warned second class passengers not to venture onto main deck.
Yes, in those bygone days, 1st Class (Cabin), Tourist, and Third Class passenger areas were strictly separated. This is a "180" from today's cruise liners.
~Teil