Also, the new Kalamazoo Air Zoo is definitely worth a stop.
Yes, you can fly into MCD, for the day. It's kind of cool, that they call a taxi, and it is a horse drawn carriage. There are lots of neat hotels there, but none are like a Holiday Inn, more like a bed-breakfast, except for the Grand, which truly is Grand.
Henry Ford Museum / GreenField village is still great, just not possible to fly to. You would have to go to YIP or DET and rent a car.
Oh, and if you are here on August 21, there is a great fly-in at 4N0. For more fly in information (Michigan has a lot of them, and the information is well organized, unlike a lot of states) go to
Michigan Fly In