We are in the area quite a bit, family all in the area.
If you are going to drive for 6 hours really decide what you want to do and see first. It is a very busy areas and campgrounds fill fast. If you are planning on staying in a provincial park make your reservations as early as you can or you will likely not get one. on a weekend. You can book 4 months in advance but check with Ontario Provincial parks online.
If you need any questions answering or need help please PM hubby and myself. We may have questions on Michigan as we tend to pop over quite a bit for weekends.
Ron & Lorraine