Tobago and its twin island, Trinidad, are the Caribbean's odd couple. 'Little sister' Tobago is relaxed, slow-paced and largely undeveloped. Trinidad is a densely populated, thriving island with a cosmopolitan population and strong regional influence. It's famous for hosting the loudest and wildest Carnival in the Caribbean, whereas on Tobago the oceanside hotels are casual, the reefs are calm and protected and the beaches are good. Indulge both the laid-back and the energetic sides of your personality by spending time on both islands (source: