Hi, Ana!
Welcome to the Disney Parks Moms Panel!
The
strollers that are available for rental at each theme park do not have the capability to fold. Also, if you decide to rent a stroller from one of the area stroller delivery companies, those strollers, even when folded, are still a bit too big to fit on the
Walt Disney World Railroad. If you have an umbrella stroller that folds easily and compact, then taking it on the train isn't a problem.
Ana, there is an area at each Railroad station to leave your stroller. When we ride the Railroad, we make a complete trip around the park back to our stroller. We typically don't use it as a form of transportation to get to Frontierland, Fantasyland, or Main Street.
However, if you want to ride attractions close to the train stations, such as Splash Mountain and Tom Sawyer Island in Frontierland or The Barnstormer and Big Top Circus in Fantasyland, leaving your stroller at the station and taking a quick walk isn't much trouble with a little one. We've done this before with our two toddlers.
Your stroller will be at the station where you boarded waiting for you. Just be sure to take your valuable items with you.
Ana, enjoy your time the Magic Kingdom! Visit with us again soon if you have more questions.
Wishing you magic and memories,
Korliss