I fly the IAH – SJU route at least once a month (sometimes 2 or 3). After a while you get to know the FA and the times they work. There are 5 “regulars” on the flight and often there are no upgrades on the flight. When the FAs have a regular in the back they usually treat them like they are in F. These regulars are also costars and have a min of 175,000 EQM last year.