Just wanted to share a few observations from DL 281 on 12/26, SEA-HKG. The flight was delayed 4 hours. After an hour of being on board and trying to fix a mechanical issue just before pushback, it was determined the aircraft couldn't be used and we deplaned. They quickly found another A330-200, towed it to the gate, and we continued on our way. My thoughts:

1) After an hour of the delay, several of the FAs were excited about the prospect of not flying and being able to go home. It seemed strange to me given the hours of the flight and the ability to get a lot of hours in this trip and that it was after Christmas and prior to New Year's. I'm sure the FAs had their reasons, but 3-4 of the FAs actually went home and were replaced. Those that did work the flight did an outstanding job.
2) This was my first flight that had a "cage" or aluminum door protecting the forward lav and cockpit from the rest of the plane. It seemed a bit odd, but the nice thing about it was that it was clear when the forward lav was occupied or about to be in use by the pilots and also allowed for us by the 2nd forward lav. Any ideas if these are being rolled out to other aircraft?
3) DL did arrange for transportation from HKG to various locations given our late arrival and the airport express being closed, however, it was difficult to find and late, so I decided on a cab.

Anyhow, overall, a great experience, despite the delay.