Check out this link under 'New Players!' to the left:
www.knightrealms.com/new-players/35-your-first-event.html
Most importantly, make sure you bring warm clothes for outdoor action. Its supposed to be terribly cold this weekend. See other threads about what to wear with suggestions from people out there. Can't stress this enough, layers, wool, don't have cotton be the layer closest to your skin, layers!!, gloves, good socks, extra socks, and good waterproof (ideally) boots for running around the campsite. There's likely to be lots of icey spots, but could also be muddy and wet in places. A warm cloak is very good costuming but can be a god-send in this weather and don't be shy about a hat. The majority of warmth lost is thru your noggin