I'm travelling with my adult dd to Berlin with BA in a few days.
I just looked at my booking and it said you can choose to book seats now for a fee. But can book 24 hours before flights for free. I looked at this out of curiosity. It looks like a fair few have booked already but the fees look like £13 to £35 per seat per flight which looks ridiculous.
Anyway, what's left over if you don't book for a fee? Anyone with any experience?