Originally Posted by
gpia
If anything, ask at the lounge what your op up chances are, and ask them to change if slim.
In the past, CX may put you at the bottom of the list if you ask, but my wife asked the check-in agent on her birthday (about 2-3 years ago) and was upgraded at the gate. My feeling was that she was already picked for birthday upgrade but CX just needed to make sure not all F seats were taken before upgrading her.