I have to add that you need to keep your eyes open for the door to where Mike and Sully do their meet and greet at. We almost walked past it because it's kind of tucked into a corner.
Sully is absolutely huge! I am 34 and love Monsters Inc and insisted that I had to take a picture with them. I was the first one in line, and when I walked up, Sully was kind of hiding in the corner. As I walked up, he popped around the corner, pretending to try and scare me....and what do I do? I decide to do my best Boo impersonation and call out "KITTY!" Yes, I'm a dork, I know it, but I couldn't help myself!