Hi Pa Chee,
Welcome to planDisney! It's definitely important to stay hydrated during a visit to the Disneyland Resort, so I'm so glad you stopped by to ask us your question!
There is nothing in the
park rules or
list of prohibited items that says anything about the size of your water bottle. While glass bottles, alcoholic beverages, and coolers larger than 6-pack size may not be brought into the parks with you, you'll be able to bring in whatever water bottle works best for you! Guests are still permitted to
bring their own food and beverages into the parks, and that can be a great way to make sure you have something with you in case your tumbly gets rumbly like Winnie the Pooh's. Of course, with the
mobile ordering service and the
walk-up dining list within the handy dandy Disneyland mobile app, scrumptious bites and beverages are always just a click away!
Thanks again for bringing your question to us here at planDisney, Pa Chee, and please let us know if we can help with anything else as you're thinking through the details of your visit. I hope you have a truly magical Disneyland Resort adventure sometime soon!
Missy