See this link!
And then say YES to reservations. (it's only in German, I know)
http://www.wacken.com/nl/woa2008/main-bands/umfrage/
Questions:
Crowdsurfing wanted in Wacken?
[]yes
[]no
[]I don't care
Campground reservations should be provided for groups over 150 people in Wacken?
[]Service should be provided, if weather conditions allow it
[]No, all areas are to be used freely, if disposible.
[]I don't care.
So now EVERYONE can fill in this questionnary!!!!