Originally Posted by
AnaTravel
Judging by the amount of times I have been offered flat, devoid of any life champagne in BA CW, I very much doubt they don't save opened bottles sometimes. Staff have admitted that the champagne offered had not been freshly opened on several flights.
There was a thread not so long ago about staff re-pouring unused champagne glasses back in the bottle on a QR flight.
I think you will find your flat champagne comes from a bottle that was opened post takeoff, and then left opened for several hours, not from the pre takeoff bottles.