Should theme parks allow outside food?
When you bring in food that is not prepared inside the park, the park will be susceptible to various germs and diseases that came from outside the park. At Walt Disney World, for example, they perform microbiological testing on their food to ensure it is safe. Also, parks would need to be accommodating for those who have food allergies under current legislation. So, for food cleanliness and safety reasons, it would be advisable not to bring outside food inside the park.