Hey there, hi there, Aylin! Welcome!
Walt Disney World can get pretty busy, with lots of people, so you can imagine there has to be some sort of rules in place so that no one gets hurt and both guests and cast members stay safe. It is with that safety in mind that a carefully considered list of prohibited items was put together, so you can know before you go what you can bring into the theme parks with you.
You can quickly browse the list of
Walt Disney World Resort Property Rules on your own, but I can tell you that strollers are absolutely allowed. Your stroller has to be under 31 inches wide and 52 inches long in order to take it into the parks with you. Stroller wagons, or wagons of any kind, are not permitted.
Aylin, if it's easier, you can also
rent a stroller at any of the Walt Disney World
theme parks and at
Disney Springs. The strollers can be rented by the day, as you need them, or you can rent one at a little bit of a discount for multiple days of your trip. They come in single or double-stroller varieties, and I've always loved the double stroller, even with only one kid or grandkid in tow. The extra space is a lifesaver for carrying souvenirs!
I hope this helps as you begin to get ready for your upcoming trip!
Anna