When you walk into the MK, head towards the area between the Fire station and the Emporium. It's right in that little nook there, right where the parade starts/ends. There are 3 or so chairs, and it's quite small. You blink, you miss it!

But the people are super sweet, knowledgeable and professional. Plus, they are great with kids! Although if your DS feels left out b/c your DD is getting the princess look, BBB does have a knight package for the boys that is considerably cheaper and has lots of knightly goodies like swords and shields. Perfect for defending his sister against any future suitors!