this could be intersting for pirates from Germany or foreign pirates who are spending their holidays in Germany at the moment.
There is a pirate openair in Grevesmühlen (Northern-Germany) which seems to be similar to the Störtebeker-Festspiele.
More informations at:
www.piratenopenair.de
(I'm sory but this page and event is only in German but perhaps you would like it anyhow)