So why was this system wide on all routes? As I understand, this includes routes such as HK-TPE in a 330 that will never go to the US? Indeed the flight I was on was from Canada to HK and at no time passed through US airspace. And of course there were none of the other restrictions mentioned. ie pax moved around happily until seatbelt sign came on at the usual time. I cannot believe US dep't of Homeland Security can control all of CX's flights!
(not to mention my previous point about the stupidity of banning airshow even in the US!)