Yes, a 15-year-old can go to Walt Disney World alone. According to Disney's official policy in 2026, children under the age of 14 must be accompanied by a guest who is at least 14 years old to enter the theme parks and water parks. Since a 15-year-old exceeds this minimum threshold, they are permitted to enter and explore the parks independently. This makes Disney a popular choice for families where teens want to "do their own thing" while parents relax elsewhere. However, it is a high-value peer tip to ensure the teenager has the My Disney Experience app installed on their phone, as they will need it to manage Virtual Queues, Lightning Lanes, and Mobile Food Orders. Additionally, while they can enter the park alone, they should have a way to contact their guardians and a method of payment (like a MagicBand linked to a card or Apple Pay), as some transactions still require an adult's signature or authorization if they were to encounter any rare technical or medical issues during their solo day.