Hello, Jazmin! I am so excited that you and your family will be visiting the Disneyland Resort for the first time! There are so many memories to be made with your little ones as magic is around every corner at the Happiest Place on Earth. Make sure to stop by City Hall when you first visit Disneyland Park to receive your complimentary "1st Visit" buttons.
I think you will find the Disneyland Resort extremely accommodating to families with young children. In fact, there are
Baby Care Centers located in each park that are absolutely perfect for pumping, or for feeding babies, changing diapers, and even rocking the little ones to sleep. They also sell over-the-counter medication and other baby essentials should you need anything. Also, your 3-year-old might appreciate the child-size toilets located in the Baby Care Centers as well.
To help store your pump and a cooler to keep the breast milk cold, you might consider
renting a locker. These are available on a first-come, first-served basis and are located inside the parks or in the esplanade which is the area just outside the park entrances. If you are spending the day at Disneyland Park, I suggest renting a locker at the Main Street, U.S.A location because it isn't too far from the Baby Care Center. If you plan to park hop, then a locker outside the park entrances might be more convenient.
Please return to the Disney Parks Moms Panel with any other questions you may have. We simply love helping families plan magical vacations to the Disneyland Resort!
-Linda M.