On the other hand, NRT-SIN was full in C (1 empty seat) and the all Japanese crew was wonderful!
Got into the Silver Kris lounge without a problem. Just needed to show my *G card and I was in!
As for cancelling one of the SFO-NRT flights... seems like UA is still operating 3 flights for the winter (2 747 & 1 777) but it's down to 2 flights a day for Sept 8 - Oct 27.