Thanks for the info. I don't expect for all 5 of us to be seated in same row but I don't want the kids to be seated away from the adults. Since we have 3 kids under 6 then I hope that they would give a row to the 2 kids and 1 adult and sit the other child and adult together somewhere else on the plane.

Is it worth contacting customer service after I book the tickets or just be sure to check in online 49 hours before departure to select the seats?