First of all, I packed water bottles for each person. It remedies the "I really want a soda because I'm thirsty but will you carry it?" conundrum. Also, it's very important on those really hot days to hydrate. Secondly, I packed everyone's sandwiches in a Ziploc bag with their name written on it in Sharpie marker. No guessing about whose crustless pb and whatkindofjamisthis, and everyone can get their own sandwich if I'm busy or in the bathroom with a 3 year old (again). I also packed myself a delicious gluten free chicken salad sandwich (minus the rice) with Udi's Whole Grain Gluten Free bread, because it doesn't fall apart and is big enough to hold onto a moist sandwich filling. Third, I packed an apple for everyone and Crunchy Cheeto's for three of us, because then I can share with the 3 year old who won't eat all of hers anyway and then I don't eat as many. Lastly, I packed myself three of Glutino's chocolate covered wafers, to boost myself into seeing all the animals and riding the carousel in less than two hours before everyone wilts. I put everything into my backpack-sized travel cooler, iced it down with three frozen gel packs, and put extra napkins and my cell phone, camera, wallet and keys into the front pouch so I wouldn't have to carry around two bags all day. I consider that to be quite a success. By the end of the day, the water was all gone, the bag was pretty light, and we had eaten pretty much all of that food. No one was hungry and I didn't get out my wallet once for refreshments. Summer bliss, I tell you, summer bliss.