A FlyerTalk Posting Legend
Join Date: Sep 2012
Location: SFO
Programs: AC SE MM, BA Gold, SQ Silver, Bonvoy Tit LTG, Hyatt Glob, HH Diamond
Posts: 44,471
My algorithm is to put zoned boarding signs at the lounge entrance. If there's a zone 1 in line, they get in before any 2+.
Etc.