The wandering entertainers were great, but the best show for our kids had to be the jousting knights. I was unable to get a good picture because we were so close up and in the action. You could hear the armor slamming against the ground. It was quite thrilling how the audience was so raucous and demanding blood throughout the battle.
What I find most exciting about this kind of event (or any other living history/re-enactment/convention) is that my kids get to see adults (other than their weird parents) who are playing and passionate about their interests. The entertainers and merchants were obviously entrenched in this other world and played their parts well. In ordinary life, most of the adult world must seem pretty drab; it is refreshing to step into another world, if even for just a few hours.
Have you gone to festivals like this? Do you want to? (I am really itching to go to a Lego convention next).