Thanks for all the advice, bit ridiculous how the crew can't rest in 10K!
Even more ridiculous how I was allowed to select it and am now being shifter with no explanation.
I changed to silver on January 7th (up from bronze) - does this have anything to do with it?
Please let me know which seat is best from remaining 12A, 15K and 16K. Seems to be a 777-300 if row 16 is present.