My almost 5 year old daughter loves him. We were in line at the 2nd party as soon as entered the party at 4. When he and Sally came out, he let out a loud laugh and it scared my daughter. And it took me the rest of the wait to convince her to have a photo with him and Sally. And honestly, I think she did it because Sally was so nice and held her hand.
I felt like a mean Mama for not leaving the line, but we had been there almost and 1 1/2 hours when the scaring happened. And she really loves that movie and I knew she would love the photo when we were finished.
So be prepared that the meet could go wrong. She had no problems with any of the other characters.