Message to high-brow movie critics and cultural elites: Stay away from the Grand Hotel on Michigan's Mackinac Island this weekend. No cynicism allowed! Not among the nearly 800 "time travelers" who arrived on Friday at the historic Grand Hotel -- the start of a three-day gathering during which they'll dress up in period garb and (in their minds) transport themselves back to 1912. The fanciful journey has been an annual ritual for 23 years now, bringing together incurable romantics from all over the country, and even abroad. It's a celebration of the 1980 movie "Somewhere in Time"-- a bittersweet love...