We are not talking about F or J class, we are talking about Y class.
You will be on a 777 aircraft with 10 seats in a row. If you are not too big, it will be o.k. - if the flight is not full and the seat left or right from you is not occupied, even better.
You will like the ICE entertainment system, which makes the flight much shorter.
Food and drink service is better than on most other airlines