Dd1 (19) and dd2 (16) have booked a short break in Pisa post GCSEs. Dd1 is home from uni and it's lovely that they are so close that they want to go away like this. They are very sensible and get on well so should have a great time. I just wanted to check dd2 won't have any problems at the airports. I cou,d send her with a letter giving her permission to go but that seems a bit ridiculous for somebody who is an adult in airline terms.