Nice timing: Sunday is a holiday in Germany. The night from Saturday of Sunday there are many dance events and parties ("dance into may"). On Sunday itself are many spring festivals and many people will take their first long walk or bike tour of the season - usually accompanied by lots of alcohol ;D I'm really sad that the tickets for Fedcon where too expensive for me this year. I live close to Düsseldorf, it's a nice town with a amusing party culture. Also visit the Japanese temple, if you can! Enjoy it ;*