As a multi-eventer I always had this problem of an all day meet without a chance to leave for food. I think a good breakfast is key, then at the meet I recommend a good trail mix with almonds and berries and some chocolate, a peanut butter and honey sandwich with whole wheat bread and a Mix 1 (an all natural energy/protein shake). I would snack on the trail mix or granola bars during the events, and in the middle have the sandwich and the mix 1.
