Almost always they will seat 2 people on the same PNR together. 9W isn't as bad as some of the other airlines (UA and the like) that try to gouge money from families by threatening to separate them during the flight.
And depending on how full the flight is.. if you go early enough (say 1.5 hours before check-in) and ask nicely, they should be able to find seating for all 4 of you together.
Let us know your route, approx time of travel and eventual outcome so that we have a new DP.
Last edited by PiperAtGatesofDawn; Jan 2, 2018 at 2:53 am