Hi Laserboi
We the exhibitors do not even have to pay for the rooms, the hotel has been organised by the chester group (they organise hifi shows here in the UK). Our costs will be to get our equipment to and from the hotel and our overnight stay etc. There will be an entrance fee for other enthusiasts who wish to visit.
To be honest it will just be really cool to meet a lot of the other guys from the forums, and get and idea of everyone's systems on an even playing field, could be an eye opener. I supposed to be going on holiday next week and I'm not sure what I'm more excited about

, though obviously I haven't told my wife that

Vinnie the batteries are only a few months old and have been very well looked after, so I should be ok.
cheers philip