GUWonder Thank you for sharing your experience. Arranging this on the day of departure seems like to much risk for me, but going to the airport is an option.

I thought about booking already for our coming child, but to book online with BA you need to add the child to your family-account before you can book a ticket with a lap infant. I suppose it’s not possible to fill in a birthdate (November 2023) that is in the future.