PLEASE IGNORE THIS I THOUGHT I WAS ON AADVANTAGE FORUM. D'OH!
Yes. I have checked in at the airport and been told I was number one on the airport UG list, but then I slipped to number two when a passenger who had checked in online arrived and requested to be added to the airport UG list. That passenger's earlier checkin time trumped me even though I got to the airport first.
Originally Posted by exerda
Presumably for domestic, it can help since if the u/g waitlist goes to airport control, you'll have checked in earlier than others.