Which is the best clubbing destination to work in over the summer?

Those are all good places, but I'd say try Ibiza. It is the number one destination for all clubbers, DJ's and pretty much anyone that likes to party. If you want to look for a bar or something, just type into google 'Ibiza Clubs' and Im sure you'll find something. Hope you have fun! But beware of spiked drinks and drugs.