The two largest expenses on your Disney budget will be transportation and lodging, with dining coming next. There are many options available to you when it comes to eating at Disney. You can choose to leave the park to eat at restaurants in the surrounding area which will save you money, but I also say that time is money. You have to consider is it worth your time to make it to your car and leave the park to eat?
No matter what theme park you are in there are numerous options in dining from quick service to table service. Choose to make lunch your biggest meal of the day. The lunch menu is cheaper than the dinner menu saving you money. Many of the meals at the theme parks are huge and can easily be shared among two people. If you choose not to share a meal bring along some extra ziploc bags so you can put your left over fruit or chips in. You can then use these to snack on throughout the day.
Buying drinks at Disneyworld can really add up. Bring your own water bottles into the park and refill them back up throughout the day. You can also freeze some juice boxes and let them thaw throughout the day while you are at the parks.
Disney allows you to carry in your own food. If you make a trip to a local grocery store stock up on easy food to carry into the parks. I have brought in things such as peanut butter and jelly sandwiches, cheese sandwiches, granola bars, raisins, animal crackers. Easy things to put into a ziploc bag are key. Gardergrocer.com is a great place to use to order groceries to have directly delivered to your hotel room.