Last week my target date (4/7) came up, but only one J seat became available on the SEA-NRT flight. Then it was quickly snatched up. On 4/8, same thing happened. Why didn't they make the two seats available on t-14? I felt I had lost my opportunity. Then today I needed to make a change to our connection to change it to a different destination KKJ instead of UBJ. Lo and behold, two J seats SEA-NRT and HND-KKJ show up! I was so excited I was speechless. Then I came to my senses and grabbed them. 50K miles + $0.00 for the change.
But now I have a paltry 8 miles left in my account...until next month's credit card statement comes through.