Just curious, which sparking wine was offered?
AY's lounge alcohol policy is a bit strange (due outsourcing?), especially considering drinks are not a problem on their business class flights. Last month we flew to Barcelona in C and had three bottles of champagne -- each. Folks on the other side of the aisle asked for sparkling wine and the purser joked that he'd have to go to the economy class to fetch sparking wine but would champagne be ok..
It had been a while I had been in AY C and I was pleasantly surprised by the quality of the food in general and the lack of plastic. Perhaps pure luck but our best flight quality-wise in many years in Europe.