Yes, you are absolutely allowed to bring your own snacks and outside food into Disney California Adventure, as well as Disneyland Park. This is a great way for families to save money. The only restrictions are that you cannot bring food that requires heating (like microwave meals) or items in glass containers (except for small baby food jars). You also cannot bring large hard-sided coolers; soft-sided bags must fit within the size limit of 24" x 15" x 18". Alcohol is strictly prohibited. In 2026, many guests utilize the storage lockers located near the park entrance to keep their snacks cool. It is also important to note that you can ask for a complimentary cup of ice water at any quick-service location, which pairs perfectly with the snacks you've brought from home to stay hydrated during a long day in the park.