Hi Mary,
Sounds like you are staying on property. If you booked your reservation through a Magic Your Way Vacation Package, you may want to consider one of the dining plans. Disney is offering great deals right now - click
here for more info on the different dining plans currently available.
Eat breakfast in your room. Cereal bars, muffins & fruit are easy to eat in the room or on the go.
Bring a refillable water bottle so you don't have to purchase bottles each time. The water at the water fountains doesn't taste great so you may want to bring along some single serve powdered drink mixes.
You can bring in outside food but keep in mind that neither glass containers (except baby food jars) nor alcoholic beverages are permitted. Coolers are permitted but coolers with or without wheels larger than 24" long x 15" wide x 18" high are not permitted. I've seen people pack a cooler with sandwiches.
Bring your own snacks instead of purchasing the expensive ones in the parks. Fruit stands offer cheaper, healthier snacks.
If you decide to eat one meal a day in the parks, consider sharing an entree. Ask for just a burger instead of the combo. Bring Ziploc baggies for any leftovers (i.e. carrots or grapes) to eat later.
If you want to splurge on a table service dining location, look into the buffets (i.e., Crystal Palace) or all you can eat meals (i.e., Liberty Tree Tavern). Do this at lunch instead of dinner - some lunch menus are less expensive.
If you are driving down or renting a car, consider dining off property when not in a park. Check out
www.mousesavers.com for more saving money tips on food as well. Wishing you many magical memories :-)