Originally Posted by
hummelmicha
I will travel [...] from BKK to ZRH and we are booked in Y (K fare).
[...]
I am M&M member (FTL) and have ~90.000 Miles on my account
[...]
I would think best solution would be upgrade with miles and cash (e.g. per person 25.000 miles + 450€)
Even if you
were booked in an eligible booking class, you would still need 65k miles per person for an upgrade with miles.
Where did you get those numbers from (25k miles + 450€ cash)?