When planning a vacation, there are many good reasons to opt for an all-inclusive cruise — one of the most compelling of which is that no one has to drive. But while the luxury of a cruise may seem like an expensive extravagance, in reality it's one of the easiest ways to take a vacation on a budget. Whether you want to sail across the warm waters of the Bahamas or prefer the crisp waves of Alaska, there are cruise deals that appeal to everyone's personal sensibilities.