As self-imposed exiles go, this one is exquisite, sexy, opulent and indulgent.My wife, Kerry, and I are holed up in one of the new, sumptuous over-the-water bungalow at Sandals South Coast Resort in Jamaica, and, we don't want to leave. So, we don't. We sequester ourselves in a four-day cocoon of over-water coupledom to celebrate our 25th wedding anniversary.