This morning on 390, three queues. No PEY sold even it's flying by a 33K

I think you can imagine what's happened for 390 using 3 queues... Yes the J lines were h*ll long with just 4 ppl queueing up in GR line. And since they let the GR line flows like half way the J line was cleared, GR in practice gets high priority in boarding...

Of course soon they seems noticed this problem and closed the GR line, ask GR to J line and just let the Y line continues to flow...

I was thinking PEK / PVG / SIN will always use 4 lines system instead of 3 lines... Seems CX is really hard to predict