FOr breakfast, scout omelets..... two eggs cracked in a ziploc bag with cheese, salt, pepper and even any leftover cooked veggies from the night before. Squish around, drop in boiling water for about 8 minutes. Halfway through, jab the bag with tongs or a long spoon to break it up and cook evenly. My Girl Scout troop loved these.
For dinner, you could do vegetarian tacos-in-a-bag. Buy individual packs of Doritos or Fritos. Cook up seasoned black beans with any desired veggies added (onions, green peppers). Crush chips in bag, open bag, add beans, plus salsa, cheese, chopped lettuce/tomatos/avocados, sour cream. Eat straight out of bag... no dishes! We're not vegetarian so do this with hamburger meat and pre-chopped everything from home or bought chopped from grocery store. Ok the first time we had it, great the second time with more toppings.
Low prep ideas: breakfast pop tars on the campfire, if you want to make a morning campfire, or try doing them on a camp stove with a skillet. If that works, you could try frozen samosas as well to supplement dinner. Veggie dogs on a stick over the campfire, maybe with some heavy sides that you make at home or buy from a store deli. Canned soup on the stove or fire, maybe with veggie burritos or grilled cheeses on the fire... not sure how to do that, but know you can.
You probably want to pick some very simple meals and some with minimal chopping; I would have to otherwise I would be exhausted making fancy campfire meals for a week.
Advice and commentary on living overseas
DD1 15, DD2 12, and DS 9