DL did it Aug 2014. AA did it Mar 2015. It took 2 more years but I'm glad UA finally jumps on the bandwagon.
Back then, Korean Air even stopped ptv inflight entertainment while duty-free is on going. KE even woke up everyone in the middle of flight with a loud duty-free ad video probably longer than safety announcement. I've seen Asiana and KE FAs began to sell duty free while front door was still opened (flight wasn't in delay) or before reached cruise altitude. But those FAs earn hefty $$ (typically 1/5~1/2 of salary) through the duty free commission. US carriers were never that aggressive but I guess some FAs may miss commission $.
Last edited by bobbybrown; Mar 18, 2017 at 12:32 pm