I was recently upgraded to F for a EWR-SEA segment since someone sponsored me with their RPU. However, I'm confused whether or not I get the benefits like three checked bags and United Club access since it's not a F/A fare ticket. Also, does anyone know which seat on the 738 is the best? According to Seatguru, 1B is the best due to the extra legroom. However, I would like to get more opinions on this. Thanks!