Originally Posted by
etch5895
The incorrect answer would have been to leave the girls alone in their hotel room or roaming around the city unchaperoned.
Which is precisely what airlines would do.
There are very few airlines that require 15 year olds to travel as Unaccompanied Minors. (Virgin, maybe Singapore...). With most airlines, a 15 year old could be on her own if no one meets her at arrival.