I paid $2K YOW-HKG-YVR-YOW in December. This past Tuesday was the 4 days out for a SSWU cert upgrade and I had to 'settle' for non-window pods. Sigh... (It was really funny because the agent started the sentence with "I'm sorry" and my heart sank and when I realized I was only giving up a window I was dancing around the house!)
This is only the first two legs of an itinerary that includes two overnights in a row, so we are thrilled that all legs are now in J (the second itinerary is a RTW in J.)
I was really surprised to have no difficulty with the upgrade. Hope the economy is still depressed so I'll be able upgrade on the way back in April!