I can't imagine not having one at Disney! We have used a double umbrella in the past but our last trip took our double bob because it was easier to push and the kids slept better in it. Plus we have a third child now so our oldest who was 6 last time would sit on the front corner if he was tired or I would have the baby in the carrier and he would ride. He loves to walk, but if he needs to snooze or eat a snack, or if we are in a hurry, it's so much easier to have them in a stroller so we can move quick to get to the next place. We go in a few weeks and he's 7 now and I can't imagine him walking the entire trip. I didn't even realize this was a thing people criticized until recently. If they are able to walk, then you could rent at the park so you don't have the hassle of the stroller on transportation to the park and getting in and all that, but just grab one when you need it. On our last trip, I took just one of the kids because the others weren't feeling well and we rented a stroller, she had just turned 5 and that worked SO well! It was so great not having one to carry on the bus and all that.