I completely understand and agree with Disney on this.
One year I was on my honeymoon, my wife and I dressed up for MNSSHP but we had some time to kill before it started so we went to DTD in costume. We were in costume early because I was dressed as Jack Sparrow and it takes a long time to even do my hair (No wigs or glue on face hair). We got to MK at 4pm and being they had not removed the no-event ticketed people yet, As soon as I stepped on Main Street I was bombarded with kids and parents wanting to take photos...The line formed. Have you ever heard of the word "glomped"? I was once and it about broke my back. Anyways.. a CM (blue button shirt one) came to my rescue. So yes, I'm with Disney on this, sorry 15 yr old tinker Bell girl.
Shameless plug, here are some photos from that trip, best Honeymoon ever! =D
http://www.captnjacksparrow.com/DisneyWorld2007/index.htm