I definitely would do what is most comfortable for your child and not worry about what others think. I have 3 children and they are all different. The oldest never wanted to be in a stroller past age 3. But my now 11 year old still wanted to rest in the stroller at disney when he was 5 and 6. Now on the other hand, my youngest child, now 7, has disabilities which upon first look you can't tell. Last year at disney, she needed to be in the stroller because otherwise she would run off, fall on the ground and not want to get up, get tired from her low muscle tone, etc. Yes, sometimes it is tough for her legs to fit and maybe some people thought it looked odd, but people should also remember that you never know what is going on with a child so you shouldn't make judgements. My child looks "normal." But she can't speak and has a brain injury from birth. She acts more similar to an autistic child. So, whether it is a tired typically developing 6 year old and a child with "hidden" disabilities, everyone should try to understand that it might be what is best for that particular child. Bring and stroller and enjoy
Disney!!