I've pondered long and hard trying to come up with a simple solution for those reenactors who do not like to cook (or don't know how).  Eating properly and drinking adequate amounts of fluids have always been a major consideration to safe reenacting. 
  Bring along at least one gallon of water per day-either in gallon jugs or bottles.  Don't forget to fill your canteens before each battle.  If you like sports drinks or gator aid, remember to drink 8 oz. of water to every glass of these drinks you consume.  Be certain to bring along fruit such as raisins or fresh nuts, trail mix or energy bars to consume between meals to keep your sugar from crashing.  Many small meals are much healthier than one or two large meals....breakfast is the most important meal of the day and will set the tone for your whole day as to whether or not you feel fatigued.
  As much energy as a foot soldier burns, boost your caloric intake and water consumption accordingly.  Eat smart in plenty of time in advance of physical activity to allow for proper digestion so the fuel will be available to put the "snap" back in your step.  Try to eat several hours before retiring to avoid indigestion.
  As a treat for having worked so hard all day, bring along a really decadent dessert.

For those who refuse to do any cooking from scratch and choose not to lighten their wallets on Sutler's Row or nearby restaurants, I might suggest something similar to this:

(Carry a small cooler with a regular bag of ice for all the meats and any other items that must be kept cool to be eaten safely.)

Breakfast:  Instant oatmeal (many flavors and varieties on the market) or cream of wheat.  All you add is hot water and sugar that you can bring along in individual packets.  To keep them fresh, place them in the little snack sized zip lock bags to prevent moisture damage.  The water can be heated over the campfire in your coffee mug and the contents of your oatmeal packet added when the water is at the temperature that you prefer.  Or else they now offer sausage, ham, cheese and egg biscuits in the freezer section of the grocery store.  Leave them frozen-put them in tin-foil(remove any plastic) and place them in a zip lock bag in your ice chest.  When you're ready to have them, place the wrapped sandwich on your metal camp plate over the community fire coals and bon apetit.  We like the breakfast meals in the can: ie Slimfast.  It is quick and easy and doesn't taste bad at all.  Trust me when I say even though it isn't haute cuisine, it will certainly taste heavenly on an empty stomach.

Lunch:  Baked beans and hotdogs...you can boil the number of hotdogs you'd eat for the weekend, wrap them in foil by the number of meals and place them on the campfire as well to re-heat.  Baked beans come in individual serving sized cans much like vienna sausages with pop top lids.  Pick up some chips in individual bags and you have your meal in minutes.
If you choose not to cook at all, bring along vienna sausages or any type of potted meat of your choice, a pack of crackers and fruit in the one serving sized cans with pop top lids.  Nobody needs to starve.

Raid one of the local fast food joints for their individual packets for ketsup, mustard, mayonnaise, sugar and salt & pepper and you'll have it made.

Dinner:  There are many flavorful canned meals available on today's market.  Ravioli, Spaghetti, Chicken N Dumplings, Beef Stew or even the many varieties of ready to eat canned soups in the larger cans for bigger appetites.
Most Deli sections of all grocery stores have a wide selection of ready to eat meals for those who do not wish to cook or re-heat at all.
  Now for those who will prepare ahead of time or maybe have someone that will help them out-try one of the following:  roast a favorite piece of meat (beef, pork etc), boil some potatoes and vegetables and drain, cut the meat into bite sized pieces (it will save you much aggravation and burnt fingers in the dark), place all the ingredients in heavy duty tin foil so that it can be reheated over the campfire.  Season to taste.
  We like boiled chicken (pulled off the bone and already cut like the meat), baked or sweet potatoes (pre-cooked) and corn on the cob (I use frozen and don't prepare it ahead of time) all wrapped in foil.  Season to taste.
  With potatoes and sweet potatoes, I pierce them with a meat fork and prepare them in the microwave unless I have a piece of meat I'm preparing in the oven that I can add the potatoes in with to save on electricity.
  If you are really pressed for time, you could always buy several of the metal plates that look like pie pans (they have sides), place your pre-cooked meals on them , wrap them in foil and carry in the ice chest-be sure to place them in zip lock bags to prevent "flooding" by melting ice then all you have to do is place the plate minus the baggie over heat, warm up and eat.
There is truly no reason for anyone in this day and age of modern technology to go hungry for a weekend.  If all else fails, climb back into your iron horse, head back to town for the restaurant of your choice or make a visit to the Indian Frybread guy on Sutler's Row.
  Helpful hint:  If you are very hungry, drink at least one bottle of water and perhaps eat a handful of nuts or crackers while you heat up your dinner.  Eat in stages and slowly.  It takes your body a minimum of twenty minutes to realize it is no longer starving. 
  Chow down and have a wonderful weekend participating in the hobby we all love so passionately.
Ms. Lorraine