Does anyone know the coverage at SEA for WiFi? I know that T-Mobile is supposed to make a hotspot at the UA RCC (lower level N Satellite) but their timing is unpublished. Upstairs there's a LaptopLane, which I think is affiliated with WayPort.

The AA AC is supposed to have something and I know there's a SK hotspot in the mezzanine level of the Satellite.

The Port of Seattle supposedly sent out an RFP for a 802.11b proposal earlier this year. But, like any civil government project, it could be years in the making.

Any coverage in the main terminal?

It seems to me that SEA (probably like any other airport) is going to have several different providers making the most cost effective (read this as rip-off) method of WiFi being on-demand.