A friend of mine put me onto this festival off the coast of Kerry. On this amazing Island with a capacity of 3,000. Here's a link to the site:
http://www.valentiaislefestival.com
International line up, top Irish acts, dance tents, family friendly and it'll have the McGregor fight on a massive screen in one of the tents. It seems to be ticking all the boxes, Has anyone ever been?