We are catching a train from Normandy to Paris return one day next week. The tickets I've booked say we need to travel with "original and valid ID" but I'm loathed to carry our passports around Paris all day.
I have a driving license but my kids only official ID would be passports. Does anyone know if it's really necessary. I have photos of passports on my phone but the booking (via Trainline) does specifically say to bring an 'accepted form of ID'