Originally Posted by
eldy
I spoke with the 1K desk and they said what we all have to be in the same cabin per PNR and we also have to be on the same PNR to get the free Economy Plus access at booking.
This bit not entirely correct. You can buy your ticket online and then at later stage buy your son's ticket ( over the phone as otherwise will think unaccompanied) and they will give him Economy Plus seating when you provide your travel details.