Hey there, Jennifer!
Welcome to the Disney Parks Moms Panel! We're glad you stopped by with your question.
I'm pleased to tell you that Guests can bring bottled water and
food items that do not require heating into the theme parks.
Alcoholic beverages and glass containers (with the exception of small ones such as baby food jars) may not be brought into the parks. I've previously taken snacks and bottled water into the Disney theme parks and both water parks and have never encountered any issues when doing so. If you're hoping to refill your bottles during the day, you can ask for a complimentary cup of ice water at any Quick-Service dining location or snack cart selling fountain drinks. The Florida temps can get quite high during the warmer months, so I like to ensure my family stays hydrated when visiting the parks.
I love bringing a crossbody bag or a medium-sized backpack into the theme parks with me, so that I have all of my park touring essentials at my fingertips. Guests are allowed to take their bags onto the attractions. That being said,
lockers are available to rent in all four theme parks and both water parks if you prefer to not carry your items throughout the day.
I hope this information has been helpful, Jennifer. Let us know if you have any new questions. We would love to assist you further in planning a magical trip!
~Jodie