While we are DVC & AP, a few years ago, we did the "Roller Coaster" Tour. We bought the platinum pass for Cedar Fair parks (we normally buy the gold pass at our local park). We also bought the platinum food plan to work at all parks.
For the four of us, i think it cost $1,600 for those passes. Again, point to remember, we would normally spend $800 for the Gold Park and food passes. We did not do WDW APs that year, so that savings basically covered the extra costs.
My kids still talk about that trip. We basically planned out two days in each of Kings Island, Cedar Point, Michigan's Adventure and Canada's Wonderland. We visited family in NY for a few days before hitting King's Dominion on the way back home.
So, two weeks, a variety of amusement parks and water parks my kids had never been to. Went to another country! Saw the 150th Canada Day Celebrations, Niagara Falls. It was a great trip, and much less than Disney.