Originally Posted by
chris63
There is no way they will discuss another passengers ticket with you
Any changes will be notified to the original pax.
That is not correct
i have upgraded multiple friends as a surprise before.
as long as you know the name and the booking code, you’re good.
also, they will always ask for a new credit card so a previous posters concern this will be billed in the same way is not warranted.
to avoid her getting an email about it, you can change the email on the booking to yours, run the upgrade and then change it back.
the only way they would still get notified of that then would be if they see it in case if looking into the booking or when emailed about a schedule change etc.