A great dining and cost saver tip.
Eat dinner at Earl of Sandwich. Their sandwiches are excellent and cost around $6 each. And, if you are just really adventurous, they sandwiches are split in half and you can swap. Drinks are extra, but we are mostly water drinkers.
Then, walk next door to the candy shop for an apple. If you have never had one of these apples, they have chocolate, caramel, marshmallows, etc and are great. At $10 each, they are pricey but really good. They will slice the apple for you in 4s, 6s, or 8s. One is probably big enough for an average family, but I am not an average size. They also have chocolate covered pineapple spears (thanks nemesis for that tip).
So, $30 for dinner and $20 for dessert. Saving money at Disney: priceless.