I'd like to add three other areas for consideration. First, the seating area behind Three Rivers Snacks, along with part of Griffon's plaza. Would make for a decent sized maze. Second (and sure not to be popular with some on this board), the Highland Stables and pasture. And third, Roman Rapids. Not the queue, but the ride itself. Someone (Cedar Point, I think?) did this a number of years back. Overall, the park really doesn't have that many more obviously easily usable spaces for mazes.