TOP TIP
Dearbee
When you are in the lounge (T3) tonight (assuming you are gold) go to the desk opposite reception about 40 mins before departure and ask if the seat next to you in free.
They will usually tell you where the empty seats are, so at least if you are still in Y you get 2 seats, or they will "hopefully" tell you that you have been UG'd...
Fingers crossed for you!