Originally Posted by nldogbert

Hi all,

Coming back to the use of the coupons for connecting flights. This is the response I received from Customer Service.

"You may use your coupons for upgrade when the stock ticket number is ours[390/050]. In addition, when one reservation contains two or more segments, pure Aegean or Olympic flight, then you need to upgrade all flights, so as to use your coupons. "

So, it seems what I interpreted from the Wiki is correct. It's a pity though especially if you want to optimize it's usage.

Cheers!