Pecking Order of Southwest's EarlyBird Boarding

Q. On Southwest Airlines, EarlyBird check-in customers automatically receive a boarding pass 36 hours prior to their flight. But what determines the order of the boarding position of the EarlyBird passengers?

A. After A-List members and Business Select, EarlyBird check-in order is strictly first come first serve. So if you want on first but not bad enough to upgrade, better be the earliest of the EarlyBirds.