Simple and easy is my guide.
An 8" cast-iron skillet is my go-to for cooking fish, chops, burgers and eggs because it not only browns beautifully, there's almost no cleanup. It, a 3 Qt stainless steel saute pan, and a small saucier are the only pans that get much use. Pasta gets microwave-cooked in a "Fasta Pasta".
This year I've been experimenting with an Instant Pot, which lets me prepare several meals worth of casserole-type dishes or roasts in one afternoon.
For me, the experience of travel includes local cuisine. I enjoy exploring regional-chain groceries because they will often have local dishes in their deli, meat/seafood cases, and bakeries. If you "snake" the aisles you'll discover locally-popular canned goods, ethnic foods, and snacks.
I seldom cook poultry on the road, but local markets each have their own versions of rotisserie chicken. Cheap and easy.
I eat a lot of salad, and occasionally steam or grill veggies. Fresh, local corn on the cob is wonderful cooked in-husk, either on the grill or in the microwave.