There's not much that's more popular on a cruise ship than drinking. Bars are everywhere, and the party atmosphere mixed with the relaxation of vacation means the booze is flowing. Whether you are sitting poolside with a fruity cocktail, or maybe playing at the casino with a beer, or having a glass of wine with dinner, having a drink just feels natural on a cruise. But the truth is that the cost of drinks can quickly add up on a ship. The solution to that problem? The drink package. Drink Spe...