Re: Michigan or Wisconsin Family Vacation
The Holland area is lovely! We have a great state park, beautiful beach, and great biking. I think that pretty much all the state parks on the west side of MI are great. We love to camp at Holland State Park, Orchard Beach State Park, Wilderness State Park, and Petoskey State Park (and Magnus City Park in Petoskey). Mackinaw City is fun; the fort is really neat for a wide variety of ages. We enjoy Mackinac Island, but it is kinda pricey for us. Another place to go is Hartwick Pines, which is a former logging camp.
I would say that there are plenty of state parks, places to get on the rivers and go tubing/rafting, lots of places to fish, hike, bike, etc.