Hi Amanda!
Thanks for your question. There is so much good food to eat in the
theme parks, it makes for its own attraction unto itself for me! :-)
However, I do understand that sometimes it's better to bring something from the outside instead, which we do occasionally for my son (now age 12).
You are allowed to bring food and drink into the theme parks
from the outside, you will just need to decide how much is appropriate, and the size of the item you wish to store the lunch in. For our family, we always carry at least one school-sized book bag, which may consist of small snacks or other food items. If we bring food, we'll usually pack them in small lunch bags, similar to what you see grade school kids take to school when they leave in the morning. The only tip is to ensure the food items don't require heating, unless you don't have a problem eating the lunch cold. There are no microwaves in the theme parks guests are free to use.
Hope this helps. Have a magical time at
Disney!
Terry