Originally Posted by corporate-wage-slave

I'm going to assume you are Silver. All the economy seats are more spacious that EuroTraveller, considerably so, though they are quite elderly frames now. You will be lucky if the head-rest sticks in place. Hence the rationale for getting an emergency row seat is less than on the EuroFleet, plus there is a high chance the emergency row will be filled - and probably with heffalumps. There is nearly unlimited leg room in front, but you get a hard sided seat plus a reduced table and not so good access to the seat pouch etc. All seats get aisle access for the WC though. So personally, unless you are in excess of 6ft 8 inches tall, I think you are better off selecting a seat three quarters of the way down, and if you are Silver, and depending on loads, Theoretical Seating will give you overall a better experience.

But to answer your questions: if you cancel, there is no refund. If you upgrade then you can either use the money towards the CW seat, or get a refund (which if Silver is effectively the only option).