"You'll find Mike & Sully in their spot across from the ABC Commissary @ MGM."
That's where we found them this past January. At the time, Sully was my dtr's favorite (her favorite switches constantly). We were so happy that she was able to see him in person and get his picture. No autographs - no even the stamp thing that Buzz and Woody do. But seeing them was enough for my dtr.
Good luck, hope you see them.