Originally Posted by
brkandjfk
As for the Unaccompanied Minor fee paid in advance, it should be noted in your PNR, have you tried calling WN? If it's there it's there.
It maybe should be, but it isn't ( I just did it last week ). However, as the OP notes, you cannot make a reservation and put in the correct age without paying the fee. I don't think there will be any problems at the airport.
Edit: As I thought about your language, I misinterpreted you. Yes it is noted noted on the PNR and will be seen at the airport.