Of course they do.
In such small environment they would not like to be seen dead with somebody a lot older than themselves.![]()
Unless it is a female passenger with a chance to leave a sizeable tip at the end of the cruise...
Officers and crew, most of it, is all down to the image they project to the other crew members.
And don't say I am talking outa my, coz I spent more years at sea than you had hot dinners....