I flew ORD-SXM on the first flight of the season in First Class. It was never a question that I wouldn't fly in First but when checking fares and making a dumby booking on United.com to see seats, First was lower than Coach at around $500 one way, a pretty good deal for First Class on a 5 hour flight (Return is 6 hours!). Also, I think that I did get an A fare and it was confirmed in First from the get go, but does this also apply to 3-cabin aircraft?