Yes, you can wear flip-flops at Universal Studios, but they aren't always the most practical choice. For most attractions, including high-speed coasters like VelociCoaster, flip-flops are permitted as long as you are comfortable with the risk of them slipping off. However, on rides where your feet dangle, such as Doctor Doom's Fearfall or Harry Potter and the Forbidden Journey, team members may ask you to remove them and sit on them or leave them in the loading area to prevent them from falling onto the tracks or other guests. In 2026, the walking demand at Universal (especially with the opening of Epic Universe) can exceed 20,000 steps a day, making the lack of arch support in flip-flops a potential cause for sore feet. A popular "pro-tip" is to wear secure sandals with a back strap, like Tevas or Chacos, which offer the breathability of a flip-flop with the security needed for intense maneuvers and long walks.