Yes, you are permitted to bring water bottles and plastic bottles into Tokyo Disneyland and Tokyo DisneySea in 2026. This is a welcomed policy that helps guests stay hydrated while managing costs. You can bring store-bought water, reusable containers, or drinks from outside vending machines, provided they are not in glass bottles or cans, which are strictly prohibited for safety. While water is allowed, the resort maintains a firm policy against bringing "full meals" (like bento boxes or fast food) into the parks; these must be eaten in the designated picnic areas located outside the main gates. Small snacks for children, candies, and gum are generally allowed in your bag. Security will perform a bag check at the entrance, so ensure your water is in a plastic or metal container to avoid having to store it in a coin locker.