I saw a child who had to be at least 7 with a harness when we were at WDW. I kind of thought "wow, that is kind of unecessary" when I first saw it, but when I saw the way he behaved, I changed my mind. He needed it, not only to protect himself, but to protect others. Some kids just go on overload with all that stimulation and don't think at all about their surroundings. All kids are different and you need to do what's best for you and your child. If anyone looks at you funny, you'll never see them again anyway. And if anyone dare say anything, I'd just completely ignore them and go on your way.
I also saw a woman who didn't speak much English lose her 2 yo dd before the parade on Main Street. I never, ever want to feel like I thought that woman felt. Even though I couldn't understand a word she was saying, I knew exactly how she must have felt by the look on her face and that scared the daylights out of me. They found her, thank goodness, but it was about 10 minutes and that must have seemed like a lifetime to her.
So, anyway, I say go with whatever makes you feel comfortable and don't worry about what others say.
I also saw a woman who didn't speak much English lose her 2 yo dd before the parade on Main Street. I never, ever want to feel like I thought that woman felt. Even though I couldn't understand a word she was saying, I knew exactly how she must have felt by the look on her face and that scared the daylights out of me. They found her, thank goodness, but it was about 10 minutes and that must have seemed like a lifetime to her.
So, anyway, I say go with whatever makes you feel comfortable and don't worry about what others say.