We camp quite a bit, and it is fun & exhausting with little ones! My usual fears for my kids are keeping them warm at night & getting too far away for me to see them. Years ago, while hiking in Yellowstone with a ranger, I asked him why he had little jingle bells tied to his shoes. He said it was for the bears. I think it would work just as well for little ones. You'd be able to hear them every time they stepped, and it would be easier to keep track of them.
Some mini-kid binoculars have been a hit with my kids for camping trips & nature hikes. (You can even make your own with 2 toilet paper roll tubes taped together & decorated.) As well as a special bag or bucket to gather "treasures" in while on nature hikes. Sidewalk chalk if you're camping where there are big rocks. (I always take some when we go to Moab.) Glow bracelets, kid card games (Go Fish, Old Maid, etc.) for playing in the evenings, and a battery powered lantern are also must-have things for us. The lantern is great because the kids can hold it & it can also double as a night light until the kids fall asleep.
I was in charge of all the food for 30 people for 5 days for girls camp last year. I wanted to make good food that would be easy to make. I pre-cooked all the hamburger that we were using and put them into pre-measured baggies. We had spaghetti one night so I seasoned some ground beef with italian seasoning, onions & garlic and wrote "Spaghetti" on the baggie. The night of the dinner, I added the ground beef to the sauce & the cooked noodles & served it. Then we had taco salads another night, so I had seasoned the ground beef with taco seasoning & tomato sauce & wrote "Tacos" on the baggie. I froze the baggies of meat too, so it would also help keep the other foods cold.
For breakfast, we had "Boil-in-bag omlettes" where you get quart size freezer bags & put all your ingredients into it, eggs, ham chunks, olive slices, diced onions, peppers & tomatoes. Add a little S&P and put them (make sure they're sealed good) into a pot of boiling water. It only takes a few minutes & they're really tasty & super easy to clean up. Quart size is good for one or two people. The freezer bags work better than regular sandwich baggies because they're a bit thicker & the zipper part stays closed better.
Dutch oven chicken is easy too. Just take your favorite chicken pieces (breasts, thighs, wings, whatever) and put them in the dutch oven. Pour your favorite bbq sauce over it & "bake" it until the chicken is done. Dutch oven potatoes are easy too. Layer thinly sliced potatoes (season how you like) & onions, and then some shredded cheddar cheese and ham chunks. Bake until tender. Right before it is done, put a layer of cheese on & let it get all gooey & tasty.
By far the best hit EVER is dutch oven cinnamon roll. Get the Rhodes bread dough. Thaw it out & once it is thawed out, roll each loaf out into a "snake" about an inch or so in diameter. Then, mix some sugar (granulated or brown) with cinnamon (do the proportions of sugar & cinnamon to your taste). Roll the "snakes" in the sugar to coat them. Then, start at the middle of the dutch oven & wind the "snake" around to make a spiral. Use all 3 loaves to fill one 12" dutch oven. Let them rise for 30-45 minutes, or until they've doubled in size. "Bake them until they're starting to get a light golden brown. Let them cool a bit & then drizzle with some icing (powdered sugar, milk & vanilla). Enjoy them while they're warm & with a glass of cold milk! They're delicious & really easy. Your oldest can help with this & have fun helping too.
Baby wipes are great for the evening wipe down of the kids too. Let them get dirty, have fun & make LOTS of memories! Have a blast & good luck!
Shellie