In Japan, they party like it's 1999 every weekend

I have never been so tired. I don’t know how Japanese people do it. They get up the same time I do. They work later and go to bed long after I have already hit the hay. Yet somehow, come the weekend, they are ready to take part in one of the many, many festivals going on any given Saturday or Sunday. 

It is not like American cities are dead on Saturday or Sunday. You can usually find some sort of fair, show, or event going on most weekends in your larger metropolises. But it is nothing compared to the jam packed calendar for each city (and ward) in Japan. Regardless of your passion, there is some form of entertainment waiting for you each weekend: cultural, theatrical, religious, athletic, gastric, artistic, and alcoholic. Whether you are looking for a solo, couple, or family event, there is something for you. Check out your city's travel guide or website. Talk to the tourist information people (who are usually pretty good at English). Check out the posters at subway stations, bus stops, and on the trains. Or just wander around a neighborhood on the weekend listening for music, laughter, and fun. You are sure to find people who will welcome you.