DH and I are from the UK living in Germany. We have uk passports as do dc1 and dc2. Dc3 is a couple of weeks old and we have a letter to say he is eligible for a German Kinderreispass.
Looking at the cost, the German option is muich cheaper - 15 euros as opposed to 129 for the Uk one. TBH we would struggle to find the extra for the Uk passport.
WWYD would you be ok with everyone bar one travelling on a UK passport? Would this make dc3 technically German as he also has a German birth certificate? (even though he is born to English parents?) Or am I, in my very hormonal and sleep-deprived state, massively overthinking this ? :)