1. Breakfast in Bed. Bringing breakfast foods, easy to make things in your room can save hundreds of dollars on a Disney trip. Most rooms have refrigerators so cereal with milk, breakfast bars, oatmeal- all doable. If you're early risers, this can also help get you to the parks and on the rides earlier.
2. Water Bottles and Snacks. You're allowed to bring food and drinks into the parks and it's an easy way to save money.