hm, I might even go there...I will be in Vienna with my gf arround this time anyways, might as well go to that festival.
But the tickets are pretty expensive..do you know if it is possible to get a ticket just for one single day?
Hmm, I'm not sure if it's possible but I've come across this on the last.fm forums regarding the event:
"no timetable yet. will come some weeks/days before it starts. one-day-tickets will be available in may/june. but they will be VERY limited"