There is no official "weight limit" for Harry Potter and the Forbidden Journey, but the ride uses a restraint system that may not accommodate guests with certain body shapes or sizes. The ride features a "bench" seat with an over-the-shoulder harness. If the harness cannot lock into place (typically signaled by a "three-click" minimum), the guest will not be allowed to ride. In 2026, this usually affects guests with a waistline of 40 inches or more, though it depends heavily on height and weight distribution. To avoid frustration, Universal provides "Test Seats" at the entrance of the attraction. It is highly recommended to try the test seat before entering the queue. If the light on the test seat turns green, you are cleared to ride. The ride also has a strict minimum height requirement of 48 inches (122 cm) for all passengers.