If you've ever imagined yourself on a tropical isle, chances are you were dreaming of Tahiti, Bora Bora, Fiji, or another palm-fringed paradise in the South Pacific. Cruising can actually be an economical way to visit these honeymoon havens, since resorts can be pricey. It's best to go between late April and early October; hurricane season starts after that, bringing hot, muggy weather. While some cruises leave from Australia or New Zealand, others simply weave among the islands. Itineraries typically range from one to two weeks, and stops may include private islands or beaches.