Hi Colleen,
Welcome to planDisney, I'm so glad you stopped in to ask your question as I see you are leaving for vacation in just a few days!
You will be happy to know that according to the
Walt Disney World Property Rules, as long as strollers are no more than 31" wide and 52" long they are allowed to be used inside the Walt Disney World Resort. I looked up the dimensions for your UPPAbaby and it falls within these dimensions so you are good to go!
If you prefer to leave your stroller at home, you also have the option of doing a
Stroller Rental. You can either rent a stroller for usage in each theme park (and Disney Springs) and return it before departing each location or rent from a Disney Featured Provider who will deliver your choice of stroller to your Disney Resort hotel for the length of your stay for usage throughout the Walt Disney World Resort property. Personally, when my children were younger, I preferred to bring my own stroller to help me navigate the airport better. However, when they were older, I enjoyed renting from a Disney Featured Provider and having our stroller waiting for us at our Disney Resort hotel upon arrival.
Have a Magical vacation Colleen! Please let us know if you have any last-minute questions, we are always happy to help.
See Ya Real Soon,
Brenda