I will never forget a Japanese guy on the overnight train to Barcelona from Paris almost thirty years ago. Fantastic deal you went to first class which wasn't a lot, and you got all the free Spanish booze you could drink. I was having a short holiday with my brother. We got very friendly with this French couple while getting hammered. A very stereotypical Japanese businessman was drinking alone. The French guy joked he would drink till he collapses and be up before us for breakfast. Indeed, he pissed himself, and when I came to the restaurant car in the morning, he was already there. It's the Japanese way.