Absolutely.
Many guests bring food into the Disney Parks because of budgetary constraints, medical needs, or just plain preference. There are no restrictions about the type of food you can bring to the
park with you. You are welcome to bring anything you like: sandwiches,
fruit, snacks, beverages, special dietary supplements, really whatever you need. You should be aware of that alcoholic
beverages may not be brought into the parks. Nor are glass containers,
other than baby food jars, allowed.
While you can bring any food you want to WDW, there are some
restrictions about how you transport food into the parks. Large coolers
and wheeled coolers are not permitted. If you click
here,
you'll find a list of Frequently Asked Disney parks questions. At the
bottom of the list, you'll see the maximum dimensions of coolers
allowed in the parks. As long as you stay within these guidelines, you
can enjoy your own food in the theme parks.
You may also be interested in the information in the post found
HERE.
Have a great trip!