Can you bring food into the parks

Guests are allowed to bring outside food and nonalcoholic beverage items into the park for self-consumption, provided they are not in glass containers and do not require heating, reheating, processing, refrigeration or temperature control and do not have pungent odors. Inform a Security Cast Member of any food items when you enter the park. The Walt Disney World Resort features a variety of great dining options for almost every taste and budget—including a wide range of choices to help accommodate Guests with Special Dietary Requests. https://disneyworld.disney.go.com/faq/parks/outside-food-and-drink/

No prob ,in the bag

Yes in the bag

You can bring sandwiches and water only in plastic

Only if you have a specific reason, like dietary restrictions.