I don't see anything wrong with it, but I also think it depends on the age of the child. My brother and SIL were there last week with my nephews, the oldest is 18 months and will be in the stroller for part of the day, but loves to get out and walk too. He has one of the mickey backpack style harnesses that he uses at disney and other places like the zoo. I can imagine it would have been hard to keep two little boys together without it, especially since he doesn't like to hold hands unless you are wanting to go in the same direction he's going. If it was an older child, like grade school maybe, I would think that was kind of odd, but to each their own.