Originally Posted by
chollie
Do they post signs?
I haven't flown from SEA in a while, but they used to have signs indicating which checkpoint has Pre.
Pre exists at A-East, B, C, and D/E. Out of the first 3, B is the most reliable for being open. A-East and C will be the first to shut down if it's not busy.
There are not signs, at least not that I've seen, until you get to the checkpoint itself to see if it is/n't roped off.
I can't speak for D/E from personal experience.
When the construction is done at F, it is expected that there will (finally!) be Pre there as well.