Yes, you can bring Gatorade into Universal Studios (both Orlando and Hollywood), provided it is in an unopened, plastic container. Universal’s official policy allows guests to bring in "bottled water and non-alcoholic beverages" that are not in glass containers. You cannot bring in open "fountain" drinks or large coolers. Small, soft-sided insulated bags are generally permitted, but hard-sided coolers are prohibited. This is a great way to stay hydrated and save money, as a single bottle of Gatorade inside the park can cost upwards of $6.00. Be prepared for security to inspect the bottles at the bag check—they may use X-ray or manual inspection to ensure the liquid is not alcohol. If you bring a reusable bottle (like a HydroFlask), you can fill it with Gatorade before entering, but security might ask you to open it so they can verify the contents. Once inside, you can refill your bottle with water at any of the Coca-Cola Freestyle stations or water fountains located throughout the parks.