The Rowany Festival (sometimes called just "Festival") is Australia's largest SCA event. Currently, it is held at the Crossroads medieval village. Anything that people do in the SCA (well, most things) will be on display in some form or other at Rowany Festival.
Festival happens every Easter long weekend - don't miss it for the world.
For more info, check out the website - http://www.sca.org.au/rowany/festival/
If religious reasons are inclined to slow down your attendance at an event over Easter, don't forget that a group of Christians generally get together in a discrete place to hold a scheduled Easter Sunday mass. And if Pesach falls at the same time of year, I'm sure there will be people cooking in accordance with customs - it's actually easier to avoid leavening agents in period cooking.
(Just so people are aware -- very occasionally, when Pesach does fall during Easter, a seder is held at the festival site. Contact User:Del if you want to be included in this).
Camping at Rowany Festival
Hrmm... so you're coming along and don't know what to take? Perhaps you need a camping list?