It's not a piss up. I think if you're taking mates to get loaded, you're taking them to the wrong kind of lunch. I'd say this is more on the refined side, there to enjoy and appreciate the wines rather than get legless and rowdy.
There were 12 guests and I'm guessing two bottles of each wine opened. There was an initial pour (probably a 150ml pour), followed by a top up of 100ml to 150ml.
