Yes, you can absolutely take Gatorade or any other non-alcoholic beverage into Disney World and Disneyland in 2026. Disney’s official policy allows guests to bring in outside food and drinks for self-consumption, provided they follow three key rules: first, the container cannot be glass (to prevent broken glass on the walkways); second, you cannot bring in loose ice (use reusable ice packs instead); and third, the drink cannot be alcoholic. Bringing your own Gatorade is a smart strategy for managing the intense Florida or California heat, as electrolyte replacement is vital and "Powerade" sold inside the parks can cost upwards of $5.50 per bottle. You can even bring in large 32oz bottles or multi-packs in a small soft-sided cooler (within the 24" x 15" x 18" size limit). Just remember to declare any food or drink to the security cast member during the screening process. Keeping a few bottles in your backpack ensures your family stays hydrated and energized throughout a long day of "rope dropping" and "Lightning Lane" rushing without breaking your vacation budget.