I don't think there's a japanese april fools. I lived there for five years, and there are vending machines at like every corner (in Tokyo). There are soda machines, cigarette vending machines, and alcohol vending machines, and in some side alley you can maybe find a porno vending machine. The alochol problems in Japan are less than here, for those wondering. I'm not sure if it's a joke or not, but drunken boxing is pretty badass anyways, I just don't think it was right the time for that.