Re: South Haven, Michigan
If you like craft beer, Michigan is one of the best places to get it, and the west side of the state is no exception. As this sounds more like a family trip, I won't get into the details, but if you'd like some suggestions just let me know.
If you're up for a quick drive (15-20 min), make a stop in Saugatuck. Otherwise, I would simply spend as much time as possible on or near the lake.