I go to the Hamburg show several times a year. It is the biggest show around these parts. In the last few years it has gotten REALLY crowded. I get there about 8:30 and the line is already around the cemetery and starting down the street! It only gets worse later on. (Unless you go really late.) They mostly have snakes nowadays, but there is usually plenty of other stuff mixed in. They've always had some chameleons there but it has been hit-or-miss on healthy ones. If you don't have your heart set on getting something specific, it's fun to look around - if you don't mind people - like Times Square on New Year's Eve. Seriously.
Deb