September 23 I flew with Eva to BKK and was unable to reserve a seat at online check in within 24 hours of flight time, and no aisle seats available at airport check-in so I was stuck with the online check in seat that I was allocated. On the return flight I managed to secure an aisle seat for free when selecting within 48 hours of the flight time which is when online check-in is available I believe. So I concluded that I left it too late on the outbound flight.