Yes, you can visit Universal Studios Orlando without a parent, provided you meet the park's minimum age requirements. According to the official policy, children must be at least 14 years old to enter the theme parks (Universal Studios Florida and Universal Islands of Adventure) or the Volcano Bay water park without being accompanied by a guest who is 14 or older. This means that a group of teenagers can explore the parks independently. However, it is important to realize that while entry is allowed, children under 18 are still under the legal responsibility of their parents, and Universal reserves the right to contact parents or escort minors out if they violate the "Code of Conduct" or engage in disruptive behavior. Furthermore, if you are planning to stay at a Universal Resort hotel, the requirements are stricter; at least one person in the reserved room must be 21 years of age or older to check in. For CityWalk (the entertainment and dining district), certain venues like nightclubs or bars have a 21+ age limit, and the district itself may implement a curfew for minors during special events like Halloween Horror Nights to ensure a safe environment for all guests.