I knew we’d left too late in the day to make it to Mackinaw City when signs for Frankenmuth sparked this thought: “Rebecca, when is the last time you had chicken?” That’s right about the time we spotted billboards for Bronner’s, the world’s largest Christmas store, and Jellystone Park Camp Resort, about two hours north of Detroit. But we kept driving. Yogi Bear wasn’t going to steal food from these savvy tourists to restock his pic-a-nic basket. Sorry, Boo-Boo. Yogi Bear Now who’s smarter than the av-er-age bear? For decades, Frankenmuth has been known for chicken and Christmas, as well as the Bavarian Inn and Zehnder’s, two of the nation’s largest independently owned restaurants. Driving through…