What’s a charter or a cruise in the Virgin Islands without a an island cocktail? It’s probably safe to say that almost everyone who spends time down there has his or her own favorite drink, and favorite spot to enjoy that drink. (Of course, you could always get the recipe and mix these up on your own boat, but joining the local color on shore is at least half the fun.) Here’s a list of their five favorites from the people at Denison, ranging from the ever-popular Painkiller at the Soggy Dollar on Jost Van Dyke to  the iconic Pina…