- Water and snacks. Food and drinks are expensive at the park, so this will be your best friend and best bet to save money during a trip. Often, I settle with just bringing water and having a big break fast, a few churros/popcorns, and then having an early or late dinner.
- Bring a jacket. Even if its nice and lovely outside, California nights can become very cold very fast, so having a jacket on hand can bring you lots of comfort.
- Footwear. Wear something comfortable. Keep in mind that there are water rides and shoes do get wet, so if you do ride them, try to keep your feet elevated or tucked inside where they wont get wet. A few notes on specific rides. Keep your feet elevated on Grizzly river run if you want to have dry feet. They have drains down under where water may randomly spout up and get your feet. I' would've had many dry runs on the ride if it werent for me forgetting about those drains. Always gets me.
- Backpack/purse. I recommend having one or someone having one in the group. Keeps your hands free and allows you to carry a lot around the park. Avoid bulky backpacks. Just something big enough to carry what you need, but stay as small as possible since Disneyland doesnt allow you to put your backpack to side during rides so a large backpack would be uncomfortable to have around on some rides. They offer lockers, but personally, they don't do a backpack any good since my purpose of having a bag is so i can carry it around and have my goodies available at all times.
- Ziplock bags. I like to take atleast 2 or 3 with me. When riding water rides, I stick my phone and camera in them and then put those inside my backpack. I've been complemented many times by park guests about these and by bringing extras, I've made a few friends while in queue for splash mountain.
I hope I made this post in time for your trip, but if not, I hope it serves some good for others .