We too eat almost every meal at the camper. I mean, I have my kitchen and fridge with me at the Fort so why don't I make use of them?
We even packed picnic lunches into the theme parks and stashed them in a rented locker. For the most part the food is <meh>

at Table Service restaurants and Counter Service can be offensive (hello Pecos Bill) although naturally there are a few exceptions. The prices you pay (even through the Dining Plan) reflect a captive audience who will eat darn near anything. What you are paying for is setting/ambiance.
The way I budget WDW trips I plan for campsite cost, tickets, Table Service, and special events. I don't budget for groceries or meals we eat at the camper because I'd be buying groceries when I was eating if I were at home, right? So I budget INCREMENTAL costs for a WDW trip.
If you do the Quick Dining Plan, the choices at the Fort are VERY limited over a stay of several days. For days you aren't in parks (see opinion above) if you're hanging around the Fort you very soon start having to head to the Contemporary, Wilderness Lodge, or other offsite location to find a food court.
Finally, eating most meals at the camper means I can eat WHEN I want (not hungry yet), eat WHAT I want (healthy apple or bag of chips), choose the quality of what I eat (hamburger or steak), or change plans at the last minute and go out to eat (even off property).
Okay - Rant [On]/
[OFF]
Bama Ed
PS - unless your names are Joy and Robert

then you eat out every day when staying at the Fort and your big, beautiful RV is essentially only a rolling coffee pot for the morning brew.
