Before getting the food ready, plan what you will be having for each meal, this includes breakfast, lunch and dinner. Based on this menu get the food ready; prepare as much as you can at home. Cut up the vegetables, marinate all the meat stuff and wrap the potatoes in foil. Once the food is ready, pack the cooler according to the order you will be eating the meals. This way, you cannot overlook necessary utensils like can-openers, as well as, essential condiments.