You didn't miss much on the first "tour". They had the car roped off so you could look but not touch. They did have people there to answer questions. If you hung around and listened for a while you could figure out who was most knowledgeable.
I'm really excited to hear we might get to drive a Leaf this fall!
End of April 2013: Traded my 2011 SL for a 2013 S with charge pkg.