Show me a signature cocktail for my wedding. I like whiskey, old fashioneds, and apple cider. He likes rum, vodka, and dark and stormys.

For your wedding, a wonderful and elegant signature cocktail that caters to both of your tastes would be the Best Man. This cocktail boasts a sophisticated blend of ingredients including bourbon, which aligns with your liking for whiskey-based drinks. The addition of chocolate bitters and liqueur adds a unique twist, making it a distinguished choice for a special occasion.

Alternatively, if you want a drink that incorporates some of your favorite elements like apple cider and whiskey while also nodding to your partner's penchant for rum, the Adam’s Stinger would be an excellent selection. This cocktail combines whiskey, vodka, gin, dark rum, and apple juice. It's a complex and flavorful option that brings in the refreshingly crisp notes of apple juice, making it a great nod to both of your preferences. Both drinks are sure to be a hit at your wedding, providing a delightful, memorable sip that truly represents your tastes.