I am sure not all window and aisle seats are gone. Be quick at internet checkin and choose a new seat, or do as I did before I became EBG: download the app, set your clock 12 hours wrong. Checkin actually opens ~36 hours before, and the app has a bug so that you can checkin as long as the clock on your mobile is <22 hours away from depature. That way you can check-in and choose a seat before everyone else.