re: Mackinac Island, MI

It's a true step back in time. The only ways to get to the island are by ferry or by plane. No cars allowed; transportation is by bicycle or horse.

The Grand Hotel is gorgeous with a huge porch and perfect views of the Straits of Mackinac. There is a circa-1800's fort at the top of the tallest hill on the island that has been preserved and frequently has reenactments and cannon firing. There is a downtown area that is very touristy but has plenty of bars, restaurants, and stores. There are several museums and a butterfly garden as well.

My favorite thing to do is to rent a bike and bike around the perimeter of the island, stopping at Arch Rock for pics.

All that being said, I'd probably max out at about 3 days on the island before going back to the mainland. Stay somewhere like Bay Harbor or Harbor Springs for more action.