Originally Posted by back seat
2) As an SE member there are no opportunities to upgrade using miles but you do receive certificates. These certificates can be used on certain, higher fares but cannot be guarenteed at the time of purchasing that fare. So one buys the higher fare and hopes the upgrade clears. Is that correct?
Yes - its Aerolotto
Actually, not quite correct.
If you book a Freedom fare for a domestic or transborder trip or a fare booked in Y or M class for international trips, the upgrade can be confirmed immediately.