I want to go abroad in August with my DCs and some friends. If I book the flights now we can get a good price and ensure we're all on the same aircraft. If I wait, we risk the price increasing and/or availability getting more difficult.
However, my DCs' passports have expired and the booking requires I give the passport numbers. Obviously I'll get the passports renewed before we actually go abroad but can I book the flights in the meantime?