Yes, Disney not only allows but actively encourages the use of reusable water bottles in its parks. In 2026, this is a major part of Disney's "zero-waste" initiative. You can bring bottles made of plastic, aluminum, or stainless steel; however, glass containers are strictly prohibited for safety reasons. Most quick-service restaurants in the parks will provide you with a complimentary cup of ice water upon request, which you can use to refill your bottle. Additionally, Disney has installed hundreds of contactless water bottle refill stations throughout the parks, often located near restrooms or in the queues for newer attractions like Galaxy’s Edge. Bringing your own bottle is a "gold-standard" tip for saving money, as a single bottle of Dasani in the park can cost over $5. Just remember that if you are using a "resort refillable mug," those only work for soda and coffee at the hotels and will not provide free refills inside the theme parks.