Up here on the frozen tundra, we know the way to stay buoyant and cheerful through the wintry blast is to schedule a break, preferably in March when winter starts to wear us down, and so we’ve scheduled ours: the Prairie Home Caribbean Week, March 14–21, out of Fort Lauderdale aboard the MS Westerdam, calling at Grand Turk, San Juan, St. Maarten, and Half Moon Cay. It’s only a week because how much sun and sand and coral sea does one need? Not much.