me and my better half went a couple of years ago, think it was 2009. It was a lot of fun. We arrived quite late, not busy, but a good vibe... think monza was in the coco loco room...
tickets for it are cheap, good music, cool people... if your in ibiza and not too hanging from the night before, check it out...
it wont be the best night of your life (well, i dont think it will be but im no mystic meg) but its fun.
i would go again...