When 14 on a return trip from Hawaii at a transfer in LAX my daughter and step daughter were left in a "Preschool room". We had paid $150 each for unaccompanied minor. The stay had been stretched due to a late plane from Hawaii. They left the room , left the airport and took the bus to an LA clothiers they wanted to visit. The bought clothes more than their pocket money so we got a credit card call and knew where they were. They got the bus back to the airport & were on the plane before we got the call "We can't find your daughters". Note, we knew they were already checked in on the plane. Negotiate for free trips. We got round trips free and 2 more round trips with a 10 year limit to be used.