Let's be clear: No special occasion is necessary to pop open a bottle of champagne. (The sooner you learn this, the more fulfilling your life will be. Ask Churchill.) But that doesn't mean it doesn't deserve its cherished place as the go-to liquid enhancer of celebrations worldwide. There is, of course, no better spirit with which to douse oneself and one's friends with alcohol; or a drink that delivers, with each opening, such an enthusiastic, celebratory pop. On New Years Eve, no matter where you are, there will almost certainly be champagne involved. Here's what to have on hand if you're hosting, what to bring if you're not, and how to make do if the selection is less than stellar. Your first New Year's Resolution: Don't wait till next year to do it all again.