Toadlover,
If you are the dad/husband of the family, what does your wife say about camping? And, if you are the mom/wife, what does your husband say?
I am going to disagree with most of the other posters here. I would NOT go camping at Disney in a tent with three teen-agers who did not want to camp. Especially if they had never camped before (not sure if they have or not). Camping in a tent involves coordinating space, trips to the showers, dealing with the rain. My opinion...this could turn out to be a mess.
If All Stars has a deal of $100/$110 I would do this. You could check in (on the plane) a suitcase filled with breakfast/lunch foods and snacks, and I don't see why whoever is in your group with the rv, couldn't bring you a few cases of water/etc. Last time we camped with family, we brought our rv and two of our daughters and their families stayed in the cabins. They flew in, and we brought all of the food. We just stopped at a
Walmart near Disney before we checked in. No issues at all.
And, we have also done Disney family vacations where family members have stayed at other resorts. We just coordinated with our cell phones. Again, no issues.
Now, let me say...in order for us to have pulled off great "extended family vacations" I did a lot of planning, and everyone agreed to follow some basic rules, such as...get to the parks at an agreed time.
In my opinion, families go to Disney to have a good time, and you don't want to start the trip with three upset teenagers.
BUT, another thing, if you are married, you will need two rooms at the values, because Disney only allows four to a room. If the person with the rv and/or cabin is a family member maybe someone could stay with them? Or the kids could rotate?
Good luck deciding.