3/4 (64 fluid ounce) bottle cranberry juice
1 liter club soda
1 (750 milliliter) bottle orange-flavored vodka
1 (750 milliliter) bottle champagne, or more to taste
1/2 cup fresh cranberries
Combine chilled cranberry juice, club soda, vodka, and Champagne (see Cook's Note).
Garnish with fresh cranberries.