Before it closed, Trial Head BBQ sin SEA aid "no to go orders" in the app, but I never once had a problem going to their takeout line and giving my priority pass to get some food to bring on the plane.
I've only done the new Brewtop Social restaurant in SEA once so far, and although they aren't quite as convenient as they don't have the separate line and we're a little bit slower, they were also happy to accept the priority pass despite the terms in the app again saying "no to go orders"