Summer vacation spots in Michigan?

Just about any town on the Lake Michigan or Lake Superior shoreline is good.

If you go further north on the LP, there's Michigan Adventure (think slightly watered down Cedar Point), Boyne Mountain Resorts.

For teenagers, I recommend Boyne Mountain Resorts - there's ziplines, kayaking, horseback riding, golf and more plus a variety of choices for staying AND an indoor waterpark that has a surf pool and a couple other fun rides. We're going there for a couple days this summer and in looking at their rooms, I found they also have condos.

If you want to go all hiking and whatnot, do the UP and Lake Superior.

We had a great vacation a few years back in the Traverse City area. Sleeping Bear Dunes was a big hit. Beautiful area, gorgeous weather.