Séan,
grainne and I still have a couple of bottles of our Dobbinworthy if you want to use that as an example of trying to clone a commercial brew (and one that will be available at the event too, I assume). The maltiness is coming through now, so I think it's actually a bit closer than it was when folks tasted it at the B&C back in July. We also have a Gingered Blonde Ale which has plenty of ginger heat if you want to give folks an idea of using "alternative" ingredients. Both are extract beers. How many bottles of each would you need, if you're interested?
Cheers, bighair/Tim