Yesterday BKK to FRA the FA were offering: Water, OJ, Apple Juice or that purple water. Looks like only 3 people including myself took the pre poured drinks (we were in the first row 11). After that we saw that FAs were only running with the champagne. No other drinks were on the trays. I guess people got fed up and everybody was asking for the bubbly. If you ask you'll be provided with it. On the same note, that Perrier champagne is pretty lame, they should stick to the sparkling water...
While in the lounge, my wife gave me a task to find her glass of prosecco. At the bar near F area and D3 gate I've asked the bartender for glass of prosecco and I've been told that they only have champagne... That made a lot of guests laugh Almost everywhere else if you ask for champagne they will give you prosecco.
I didn't even see the name of the champagne but it wasn't that Perrier one.