There are two of us travelling so selecting the twin seats at the back would be ideal.

Most of the seats at the back show as premium on expert flyer, so I assumed you might need to pay for them.

Generally though, the reason I am looking into paying for seats is because although I know you can select seats for free, I also understand that my ticket may not allow seat selection until check in t-48 before the flight. Confusingly my booking on the website says 'seat selection available 180 days before the flight', however it then explains that only certain ticket types can actually book the seats in advance.

I am unsure whether there will be that many seats available at t-48, I'd hate to end up either separated and/or dreaded middle seats for such a long time!