Hello and welcome to the Disney Parks Moms Panel!
You are certainly more than welcome to bring a cooler. However, per
Park Rules and Regulations, coolers larger than 24" long x 15" wide x 18" high (61cm x 38cm x 46cm) are not permitted. Please keep this in mind when selecting your cooler. It's always a great idea to review the Park Rules and Regulations prior to your visit. With every one of my vacations, I always refer back to this page for anything new that may have been added since my last visit.
Diane's Tip of the Day: Did you know that all
Walt Disney World Theme Parks have a
Baby Care Center? They offer parents helpful amenities such as a kitchen with a microwave, sink and oven. They also have a feeding area with highchairs. The list goes on and on. Disney wants to make sure that your little one enjoys every moment of their Walt Disney World vacation, too.
Have a MAGICAL day and "SEE YOU REAL SOON!"
~Diane G.