Hey there Rebecca! Welcome to planDisney. You've brought us a great question about what you can bring into the park and I would be happy to get you some answers!
As a momma myself, I totally get needing to bring the whole house so you are ready for anything, especially with you having three babes under 3 years old with you. I took a look at the
Park Rules and Regulations and it states that you can bring your very own Mary Poppins magical carpet bag as long as it is no larger than 24" long x 15" wide x 18" high. You are welcome to bring bottles with water for you to use throughout the day, as well as snacks.
Speaking of making bottles, are you aware of the amazing
Baby Care Centers located in the parks? There is one in each park and this is such a great resource for any parent. The Baby Care Centers are a place you can bring your littles for a more quiet space to nurse, feed, change diapers, or use the toddler-size toilets for those potty training. They also sell your typical must-haves for any baby or toddler if you run low, like diapers, wipes, formula, etc. Not to mention they are staffed with the most lovely Cast Members to help you with anything you need. In Disneyland Park, it is located at the end of Main Street, U.S.A., next to First Aid and Plaza Inn. In Disney California Adventure Park, you can find the Baby Care Center in the Pacific Warf area next to Ghirardelli Soda Fountain and Chocolate Shop.
If you need some time to sit and let your kiddos get their wiggles out, I recommend catching a showing of
Disney Junior Dance Party!! This was one of my kids favorite things to do where they could dance around and see so many of their favoirte characters on stage.
Rebecca, I want to thank you again for stopping by to chat. I hope your visit to The Happiest Place on Earth is nothing short of magic and wonder for you and your crew!
Carrie