Welcome to planDisney, Diamond!
Diamond, stroller wagons are not allowed into any of the theme parks.
But as a mom of two little ones, I could not manage Walt Disney World Resort without my double stroller. So I am speaking from first-hand experience when I say that they are allowed, however, they must fit in certain dimensions.
According to the
official rules, strollers must be no larger than 31 inches wide by 52 inches long. I have both a Bob Double Stroller and an UppaBaby Vista that both fit into these requirements, however, be sure to measure your stroller before you head out!
If your stroller is a bit too big, you can
easily rent one through many third-party services, or at the theme parks themselves. I find that the strollers that you rent in the theme park are a bit too hard for my little ones to nap comfortably, so we tend to rent one from a third-party, if needed.
In terms of bags, you are able to bring your backpack or cooler in as long as it is
smaller than 24 inches long by 15 inches wide and shorter than 18 inches high. We almost always bring a small soft-sided cooler to throw under the stroller with bottled water and snacks. You should know that loose ice is not allowed, so make sure that you put it in a reusable bag of some sort.
I hope that this helped, Diamond. Please come back here to planDisney if we can help answer any other questions for your magical vacation.
See you real soon!
Sarah B.