As far as batteries go, don't be too worried...I didn't even change them at canberra, and took heaps of video footage. I did have a spare set, but didn't use them.What i did however, was buy 4 rechargeable energizer batteries and a recharger...
I believe at wakefield i will go through more batteries, as the sessions are longer..And may also run out of room on the 2gb card. But for people with laptops, just take it with you, and empty the card every 2 sessions or so...