Sometimes you are in limbo for a day or two while it is processing and getting you a seat assignment. Although, the latest I have ever cleared is about a week out, after that, it is usually too late.

Best bet is to call.

If you do not get upgraded, you never know, the nrt flight can be full. Remember it is also a hub to hub flight for connecting passengers to NW to the rest of asia.

Get to the gate as soon as the BF conceirge arrives. Approach him/her, be very nice, say your upgrade did not clear but you love CO anyway as you give him/her some very sad puppy dog eyes, and volunteer for an op up. It may work, may not. Good luck and never give up hope.

Definately no upgrade, then see if you can get a set of 3 seats to your self.