REI, RichMoor, or Mountain House. Those are nice and easy ways to have fast freeze dried food but, take a look in your pantry or ask a friend that is handy in the kitchen to get creative and you can have your meals from what you already have in the house.
Notice the Ramon noodles, we made the noodles without the "sauce" and my friend Gary brought us some home made pesto to mix in it with a tuna packet as well. Lunch was a bagel, sliced meet (peperoni and salami) that was stable at room temp, and room temp safe cheese. We also took oranges and trail mix as snacks for the hike and our Sunday breakfast was plain oatmeal, three mini-moos, two honey packets, and dried fruit.
I think even when doing what is known as "trunk camping" which is where you are walking distance from your car to not go over board with the food. Sometimes chicken and rice is good or a vegetable stir fry. With diabetes it can be hard when the meal planner buys only BBQ, smoked pork butts, or breakfast burritos all the time. I really have to count the carbs twice and deduct a little of insulin just to be safe for these weekends. Now, I am not saying I don't enjoy that stuff, it is just good sometimes to have a lighter meal.