Well I'm biased cos I'm exhibiting, but the centrepiece is a big bouldering competition in a tent, which is a lot more outdoor than most bouldering comps. Plus lots of climbing and mountain bike shops with clearance stock, and lectures/ films which you'd normally have to pay more than a fiver to see.
So if you're a 'real' climber its a good chance to socialise and pick up a bargain, if you're not its a good way to get into it. Plus, if last year's show is anything to go by, there are some fucking stunning photographs on sale in the Showroom tent.