Matt, we started full timing when we had 3 kids and were still full time with 5. We still live in the RV and do some traveling with the 8 of us now. The answer depends on a few things. Will it be hot, moderate, cold where you will be? How long will you be in the RV? 7 adults or will there be children?
Our pattern is to cook inside when it is cold and outside when it is hot or moderate. We travel with a smaller air fryer oven and single burner plug in electric stovetop. They fit easily in the storage compartments of the RV and set up easily on a picnic table or fold out table. This is a very important one.
The limiting factor for us are the 10cuft fridge/freezer not the cooking appliances and space when cooking inside or outside. If 6 of the 7 bodies are made to go away from the outside cooking station or go outside if cooking inside, you'll have plenty of space. Sometimes it is easier for one person to be making one thing inside and another outside. My wife and I do this a lot. We do dishes outside if dry camping and inside in the single bowl sink if we have hookups. You can use and reuse paper plates and the when they are beyond reuse, they become the evening fire or charcoal starter.
Due to the varying state of repair and configuration of the fire pits we encountered, we started carrying our own. Also, sometimes people have burned trash in the pits and if the hosts don't clean them out for every visitor, you could be cooking over burning plastic. A weber smokey joe small kettle grill or the rectangular "Go anywhere" are good options. Roasting hot dogs and sausages are very popular for us and they fit nicely in the small fridge in their packaging. Grilled chicken thighs or breasts, hamburgers, etc. Ground beef is very versatile and compact. Pork tenderloin cooks quick and is great over a fire or charcoal along with boneless turkey beast and both are packaged well and compact. Leftovers get turned into sandwiches, quesadillas or added to the scrambled egg breakfast the next day. If you are a soup person, those are very efficient due to having a lot of dry ingredients.
Unless you are doing something like hot dog fires, where everyone participates, the group may have to get used to not eating at exactly the same time, all of the time. We make pizzas a lot and will make 2 or 3 small ones then get everyone started on eating them and continue to add them to the oven or air fryer oven. The dry ingredients for pizza dough, bread, quesadillas, etc. don't take fridge space so we do those a lot.
Outdoor and/or campfire cooking is very enjoyable.
We are expert at what does not need to be refrigerated and for how long as far as condiments, fruits and vegetables. Potatoes, apples, bananas, avocado, etc. stored on the counter or on wire shelves.
I don't know how often you'll be camping/traveling but you'll figure out what works for you guys pretty quickly, what is enjoyable, and be making some priceless memories!
