Dress code
From car thru ops thru security/immigration.. uniform, tie, polished shoes etc. as soon as on board, all off and dress according to temperature... shorts/t-shirt for example. Closed up & ready to go, sweatshirt, PJ bottoms, flip-flops.. Arrival... depends.. will usually offload as dressed (PJ bottoms etc), then monkey suit on to go through customs etc etc to the hotel
Once spent 30h loading a 74F in BCN due to various incompetencies (not all Iberia's fault), no way I'm going to even try and look pretty in such a situation.