Another huge vote for the Sleeping Bear Dunes....simply incredible area that you have to see to really appreciate. Mackinac Island nice to see once..but really quite a bit of a tourista trap unless you can stay there and get past the typical tourist stuff. But, it's nice to explore at least once. Although we didn't get to really spend anytime there, Traverse City looks like it could be fun, and there is that huge campground right across the street from the beach!! Exploring the shores of Lake Superior or Huron look like it would be a lot of fun. We hope to be heading back there in the very near future now that we're living in the greater Cleveland, OH area! Enjoy!