"... On an Air NZ Flight with a very "senior" flight attendant crew, the pilot said, "Ladies and gentlemen, we've reached cruising altitude and will be turning down the cabin lights. This is for your comfort and to enhance the appearance of your flight attendants." ..."
A couple of years back I was on an Air NZ flight which served an rather 'interesting' breakfast roll - I assumed it was some Kiwi speciality. Then the announcement "if you wondered what the breakfast was, it was meant to be a bacon and egg roll, but for reasons I cannot explain it was bacon and banana!"
A lot depends on the humidity: I have been in Phoenix Arizona where it is that hot but next to no humidity. You tip liquid in at one end by the gallon and not much comes out at the other, and you never get sweaty and uncomfortable. I've known it much more oppressive in London.