I flew to NRT on NW with a zed in January. Got upgraded to WBC, but then again I was wearing a three piece suit (long story) as opposed to business casual. I didn't even ask if it was available because of what I've heard about NW's upgrading policy. I was very pleasantly surprised when I found my seat on board.
http://www.nonrev.net/forums/style_e...IR#>/smile.gif
Conversely, I've heard that AA is much more generous about upgrading non-revs. I don't have any personal experience, as I've only used a zed on AA for domestic routes where first had been full. The last time I took them I was actually on my way back from NRT, and due to a crazy routing ended up with AA. That was an interesting day!
I would love to take JL to experience the service, but unfortunately US only has an ID75 agreement with them I believe. Too expensive.[/b]