Hi there Amanda!
Welcome to the Disney Parks Moms Panel. I can't wait for you and your little one to make magical memories at the Disneyland Resort. Unfortunately,
lockers at the Disneyland Resort are not large enough to store an infant car seat. If your car seat is able to be inserted into a stroller, this may be a better option if you plan on taking it with you. Alternatively, you can request certain Uber vehicles that are equipped with car seats so that you do not have to bring your own. If you plan on staying at a hotel on your trip, you can also store your car seat at the Bell Services desk of your hotel. I have done this at my Disneyland Resort Hotels in the past.
Since you will have a little one with you, I wanted to inform you of a few tips before you head to the Happiest Place on Earth. Located in Disneyland Park and Disney California Adventure Park are convenient
Baby Care Centers. These offer private spaces to feed or change your little one. As your tot gets older they also offer adorable tiny toilets. My toddler just LOVES these right now.
Also, Did you know that your little one will be able to ride with you on any
attraction that does not have a listed height requirement? You will be surprised at just how many attractions you can take babies on at the Disneyland Resort.
I can't wait for your trip, and please feel free to return if you have any other question!
-Jennifer