We plan for around $100 a day for our family of 4. We do try and plan beforehand for special things, like a character meal so that it doesn't kill our budget. I totaly agree with going to
www.allearsnet.com and checking out the menu's. This is how we plan each trip and make sure we're not nuts with our budget.
We also eat breakfast in our room (cereal or bagels from home and only have to purchase milk/fruit from the food court) so brkfst. is less than $5 for everyone.
Lunch can be our big meal of the day (same food but cheaper than dinner prices) somewhere special or just food court when we go back to the hotel for our swim break. Food court prices are pretty good and some things are indeed big enugh to share.
Dinner is usually CS somewhere in a park. I don't think we've ever had our big meal as dinner in all of our trips. To me it's a waste of money. You get the same food at lunch for less $$. Ok, one exception is last summer our first night we went to R&C in Epcot, but that was a special occasion.
Snacks are pretty much ice cream or popcorn. Frankly, we go in JUly and it's just too hot to stuff yourself all day long. Maybe that's the secret to a low food budget , go when it's too hot to eat!!!
BTW, we also used Garden Grocer this year for the first time. It was good service, but I think it's still cheaper to pack a suitcase full of food from home and bring it. On sale at the local foor mart is still a better bargain, to me anyway. Also, you
HAVE to stop and get water somewhere. That is the #1 budget tip I can give. Buying water/soda all day in WDW will absolutely kill any budget you have.