My first trip in first was waaaayyy back in 1997 on a BA from LHR to JFK, they had a promo that offered o/w in first on a f/f business ticket, needless to say I was thrilled and had a great time, when I boarded I had a feeling I was not dressed right but it turned out most of the fellow pax were dressed even more casual than I was, since then I have always tried to be in first when I do long haul...