I have visited Moet, Mumm, Bollinger, Charles Heidsieck, Krug, Laurent Perrier, Perrier-Jouet, Pol Roger, Pommery, Louis Roederer, Taittinger, Veuve Clicquot, Piper-Heidsieck, Heidsieck -Monopole, Dom Ruiuart, Deutz just to mention the major houses. I spend part of each October each year visiting the Champagne region. Even Dom comes to me in 12 bottle cases. If you doubt me I will be glad to send you pictures. Cristal is one of the few that I get in six packs.