I have never been in a PC that small, but I also have not traveled through SEA. For that matter, I've never been in any other RCC. The one at PHX seemed smaller than the PCs at ATL and SFO, and much smaller than the one in AUS. There were two agents at the front desk, however, and they were very friendly. I'm sure they make life much easier for RCC members when something goes wrong with PHX United flights.