If your a Plat or even a Gold and willing to fly Saturdays I would not waste the miles. I literally fly BOS-SFO/SJC/LAX every week and have not missed a UG yet on those routes. Last year I think I missed 2 total. There is no doubt NW is holding back R inventory more than before and the Y-Up program is selling more FC seats to business people but that is mostly on the consult-o-tube weekday flights and for the most I am not finding a huge difference in results, just timing. I have had 4 BF UG's already this year but they were not the typical BF. When I got to the gate my FC BP was waitng for me and I did not have to hang out waiting. I see this as NW holding back a little longer for potential revenue but so far it seems like it is probably Silvers who are missing them. I don't even know if I could enjoy a domestic FC flight on NW knowing I shelled out 15,000 miles for something that is almost always free. Check KVS, fly on Saturday, and pick a good Y seat to reduce the angst!