Let's see, it's been a few years back when I was a CM, but I saw Reba McEntire there with her son. She had on no make-up, a baseball cap, and her hair was in pigtails, but she looked great. I wasn't sure it was her until she said something to her son. There's no mistaking her voice. She was waiting in the standby line a Space Mt. and it had like an hour wait at the time. I once heard her say in an interview, many moons ago, that she loves to take her son to Disney, and if anyone approaches her for an autograph that day she says, "I'm just Shelby's mom today."
I also saw Jada Pinkett Smith on Halloween in '02 over in Tomorrowland. Will wasn't with her, but I heard that he'd been in the parks with the family earlier that day. She was there with the kids and what appeared to be a large group of her family. Their kids are cute!
She didn't have an escort, but my manager asked another CM and I that were working a candy station for
MNSSHP to escort her over to the Speedway, because guests were starting to crowd them. She thanked us for our help, but said that it wasn't really necessary and that she and her family didn't want any special treatment. I told her that it was our pleasure and that we just wanted them to have a normal vacation like everyone else, but without any curious onlookers hassling them.
I know one reason that Disney encourages famous people to have an escort is for their's and other guest's protection. I know it sounds odd, but remember the Beatles. It's the same concept. They don't want someone to look up and say "Oh my goodness, there's
insert celebrity's name here!" Then there's a mass stampede of guests running that way to get a picture, autograph, piece of their clothing, etc., and some poor child is trampled in the process. I think when people see the VIP escort with them, they get the idea that it's not ok to go up to the famous person and try to get an autograph or picture.