Hey there, Alona!
Welcome to the Disney Parks Moms Panel. I'm so excited you are taking your little ones to the Happiest Place on Earth.
When we vacation to the Disneyland Resort with my son, a stroller is a bare necessity! With the hot sun, excitement, and so much walking, he often needs to rest his feet and take naps in his comfortable stroller. When it comes to deciding which stroller to bring, first make sure that it is not any larger than 36" x 52." Second, I would consider the maneuverability of your stroller. Disneyland Resort is has many smaller walkways that are often quite full with Guests. You will want a stroller that is easy to steer safely in larger crowds.
Keep in mind you can also always
rent single strollers at the Disneyland Resort when you arrive. Some of my friends with two children actually prefer to use two single strollers in the parks as opposed to a larger double stroller. This allows siblings to split up with each parent to ride different attractions, use the restroom, or see different entertainment options.
As a parent with little ones, I want you to also be aware of the convenient
Baby Care Centers located in both Disneyland Park and Disney California Adventure Park. These offer semi-private spaces to change and feed little ones, nurse or pump milk, and they even have tiny toilets for potty-training toddlers. My son gets so excited to use these each trip.
I hope this information helps, and I can't wait for your upcoming trip. Have a Fantasmic day!
-Jennifer