Its always my favorite thing to watch little girls of about 4 interact with the princesses. (Brings back sweet memories of my daughter's first time at WDW) I remember once watching a little girl at the table next to me at Cindy's who was dressed as a Disney Princess, meet her "double". She hugged the real "Disney Princess" so hard and started crying with excitement and through the tears I hear the little girl say " I love you so much, I couln't wait to meet you, you are very most favorite princess" . She couldn't bring herself to let go. Once time this happened it was so touching that about 5 tables of people were all crying. The mom finally had to gently pry the little girl away from the princess, who came back and made another stop at the table on the way out.
(Im sitting here now crying just remembering it)