I'm off to this tomorrow. It's totally free. There has been a DJ set running all day (and night) too. My mates are currently dancing their arses off to the banging euro-beats on the banks of the tyne until 4am.
I'm also pondering going to 'Benicassim' in Valencia. It's a 3 day music festival and beach party in Valencia. I'm thinking I might get me a 'MyHab' too.