Agree with regular bedding instead of bags. Too bulky and too hard to clean. We have been RVing for over 45 years, and I am certain I keep far more than I need in our RV. Eating utensils for all who would normally be there - You can decide if you want to keep washable versions or rely solely on paper for this; One each - frying pan (lg & sm), big pot, small pot; zip lock bags for everything; if you have one, cooking vessels for a microwave; coffee cup for each who would usually camp in rig; plastic glasses for drinks; paper products (T paper, paper towels, paper plates, paper bowls); a colander; if needed, a cork screw; plastic wrap & aluminum foil; a fire extinguisher; one-cup coffee pot; spatula, long fork,small whisk,slotted and large spoon (typical starter set for a kitchen); larger bowl for mixing things; Trying to think of what I always use. I cook often in my RV, but many people don't. If you aren't planning to cook most meals, you may not need what I have listed. Store as many things inside other things as possible. A sharp knife; a cutting board; a portable grill; collapsible chairs for the campfire; a tool box with basic tools (if you're able to actually do repairs beyond the simple things, this would obviously contain far more than screwdriver, hammer, plyers! You'll figure you what the basics are for an RV as you borrow from others as you need them!); Outdoor extension cord; lights for the awning (if you want); mat for under the awning (wouldn't go anywhere w/o one); small table for outdoors(not all RV parks have decent tables, some none at all); I keep basic spices/seasonings in the RV (salt, pepper, etc); a few basic foodstuffs (can of soup, pasta,sauce, etc) for those overnight stops on the way to destination). We also keep basic clothing in the rig. Hoodie, rain poncho, underwear for 2 days, shorts/jeans/shirts for several days. Every trip we pack more. Also keep sandals/sneakers in RV. We both also have warm jackets for those chilly nights by the fire.
Over the years I have determined that it is just easier for me to go food shopping after we reach our destination, right after we finish hooking up.That way, I only buy what we will use for that particular trip. Far less to move in and out of the RV. I do usually take condiments from home, placing them in smaller containers with tight lids. Don't want small bottles taking up space in my fridge at home when we're back!
You'll find that you will begin to accumulate things, or find out you do or don't need items as you use your RV more. It's a never ending life experience! DH and I absolutely travel with far more than we need. Every once in a while we go through everything, make changes, and start the whole process all over again! Part of the game! Trial and error, and no two RVs are packed the same! Whatever works for you depending on how you will be using it. Hope this gives you some ideas.
Two young retirees restless to GO!
Life is too short to wait too long to do all we want to do!!
Go and enjoy!!