Don't be sure you will actually have this seat assignment when you check in.I secured seat assignments for our family of 15- 300 plus days out. I checked every month up until the night prior to departure.On checking in at the airport all the seat assignments had been changed.They had 5 and 6 year olds seated alone- "miles away" from their parents. Same thing on the return. Bassinets ordered and weren't honored. Total chaos for a 13 plus hour flight.
Happens regularly co the FA's told me.