As an ATSA, I fly on as many "Fam Flights" as poss, both with "Schedule" AND "Charter". My dress "guide" is to be "smartly dressed". (One airline does state that "ties need not be worn". I wear a tie. I don't to work, cos I am hidden from Joe Public, but on a Fam Flt, ESPECIALLY on the flight deck, I am represnting both my employer NATS/CAA and to a lesser extent, the airline. In 40 years of blagging flight deck trips, the worse one was a "German Airline". The F/O was very smart apart from a pair of cowboy boots!
I think that zones had a possible one off.
Our aim is to please, [that doesn't upset the cleaner]
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chiglet