I know there are very few restaurants near the convention center. I usually take peanut butter and jelly from home (in checked luggage) along with a couple of bagels, cups of soup and crackers, 2-3 apples for snacks. These things don't spoil in luggage and the hotel I stay at has a full kitchen. I also take advantage of the breakfast at the hotel. I rarely eat out while at the festival. Have fun and pace yourself. It can be very tiring. Depending also where you stay, the green line bus runs in a circle and is free. The festival buses do not go to all the hotels. I learned about the green line bus the hard way--after walking to and from the festival.