"are you a guest or crew?
"
On my first trip to Bermuda, circa 1958, I turned up for breakfast at the hotel - Belmont Manor ? - and asked to be seated. "Are you a guest or BOAC" I was asked. Upon confirming the latter I was ushered into a side room where others of my crew were seated out of sight !
Clearly our table manners weren't suitable to be seen by regular guests, largely of USA persuasion ( maybe we held our knives and forks in the correct hands ? )