The good news for visitors fond of their booze: Japan is pretty much a drinker's paradise and always has been, it seems.
As far back as the 3rd century, Chinese historians dutifully recorded the fact that the people of Yamatai - ancient Japan - were unusually partial to a tipple. Excessive drinking, singing and dancing, even at funerals was all the rage. Today, alcohol is an important and accepted part of Japanese daily life, from social and business drinking to religious rites and traditional customs where sake plays a central role.
The bad news is that sake and the local brews, which contain a stiff dose of cornstarch, can leave the over- indulger with a staggering, unforgettable hangover.
Read more: http://www.japanvisitor.com/japanese-culture/drinking-in-Japan#ixzz3sChSrHrv