Flying LHR-DXB on A380-800, DXB-NRT on 777-300ER on Y class.
Since we have two small children, I was thinking of getting the middle row of 3-4-3. Does anyone know if the armrests can lift on non-bulkhead seats?

If the armrests are static/rigid, we prefer to split 2 x 2 and get window-middle or middle-aisle combo. Any thoughts? TIA.