Planning a holiday to Europe, and I’d love to take my 2 yr old granddaughter with us, my son & daughter in law are excited to have a week alone, at home, and I’m so looking forward to it, what are the rules on me doing this ? She has her own passport, and is a frequent flyer, so no issues there, but I did read somewhere that I need a notary to confirm I’m not taking her without her parents permission ??