I want to book a flight from Germany to the USA and have narrowed down my options to SQ A388 FRA-JFK-FRA and AF CDG-IAD;JFK-CDG. The plan is to sit on the upperdeck.
I know that AF offers this and doesn't charge extra. However, they let you select their seat at the time of booking so I would assume that by now all of the upperdeck will be booked out.
Singapore Airlines has two versions of the A388 - one with, one without economy sitting upstairs. Which one is being used on the SIN-FRA-JFK-FRA-SIN run? Also, it's been a while since I last booked SQ and I don't remember whether they let you select seats. Also, do they charge a premium for the upperdeck?
Thanks in advance!