Cooking and eating well are two of the things I insist upon. I have 2 burners, a folding Coleman style oven, and a dutch oven, along with a cast iron skillet, skillet w/ grill in bottom, & sauce pan, both with lids.
Between them I can cook anything. My ice chest will last a week on just ice, or two weeks, first as a freezer, second as an ice box, if I start out with dry ice. Combined with smoked or canned meats, I can easily stay out for a month or more.
When cooking something that I can only make in large quantities, I generally have no shortage of neighbors waiting to enjoy my offerings. I just keep enough for me for an extra meal or two. In turn my neighbors frequently invite me to their BBQ's and get togethers. Yesterday, as I was readying for departure, one of my neighbors gifted me with 10 lbs of smoked fish, packaged in 1/2 lb individual packs that need no refrigeration. The night before was a neighbors night out, and I made up a huge batch of Hawaiin BBQ Rigatoni for everyone. It was great and the first time I had made it this year.
Don't let your diet or your tastebuds suffer, if you can cook it in a house, you can cook it in your van or outdoors too. Make room for what little equipment you need, and enjoy your life. It's just too short to just make do...