Last year, there was a website to sign up. You receive an email confirmation. You meet a CM at the front gate with your confirmation and they escort you in. We were at the taping in front of the castle. As soon as we got there, they broke for lunch and they told us to come back in an hour. So we left and came back. It seems to me that anybody could just walk up and watch. It is A LOT of standing around and waiting.