Originally Posted by
Fabo.sk
I'm not sure how it works exactly - the only time I had a flex ticket, I didn't even know it, and it was the first flight of the day anyway.
I do know that there is a lot of staff not being familiar with the procedure, and would try to have you change the ticket, however the correct procedure is to change it within checkin process.
Everyone, from Twitter to PSL still says that on day of departure, for go/after show, I will need to pay fare difference if there is no availability on H class.
I guess I'll discover it on day of departure