According to Universal Orlando's 2026 policies, you are allowed to bring a limited amount of food into Volcano Bay, but there are strict guidelines to follow. You may bring "small snacks" and food required for medical purposes or special dietary needs, as well as baby food and formula. Bottled water is permitted as long as it is in a plastic container and does not exceed 2 liters. However, large meals, hard-sided coolers, and glass containers are strictly prohibited. Any soft-sided coolers must be no larger than 8.5 inches wide, 6 inches high, and 6 inches deep. These rules are designed to ensure safety and prevent the introduction of outside alcohol or hazardous items. While you can pack a few granola bars or a small sandwich, the park encourages guests to utilize its themed dining locations like Kohola Reef Restaurant, so be prepared for a security bag check at the entrance where any prohibited items like open containers or large coolers will be confiscated.