But after all the tea has been sipped and scones nibbled, revelers may want to toast the happy couple with a cocktail – and one English spirit company has got just the recipe.
Mixologist Dan Warner of Beefeater, the iconic British liquor brand that adorns their bottles with exact replicas of the Beefeaters who guard the Tower of London, tells PEOPLE he created his special Royal Punch with the bride and groom-to-be in mind.
"Of course I thought first and foremost of the happy couple when creating it," he says of the recipe. "Drinking punch represents a tradition that is long associated with celebrating royal events."
"As of late, punch has also resurfaced as a modern and trendy drink du jour, and it caters very well to large groups," he adds. "It's perfect for a viewing party for loyal royal followers in the U.K. and those in the U.S. who want to celebrate with a decidedly English bent."
Want to make the drink yourself? Here's the recipe:
Beefeater Royal Punch 2 parts Beefeater London Dry Gin
1 part Dubonnet (This is a nod to the Queen Mum, who "was known to enjoy gin and Dubonnet as an apertif," notes Warner)
1 part pomegranate juice ("It represents marriage.")
2 parts fresh lemonade (American style)
Angostura bitters to taste
Serve in a large punch bowl (or a large, deep casserole dish) and garnish with wheels of lemon and lime, mint sprigs and pomegranate seeds.
Chill the punch with lots of regular ice cubes or make your own fruit ice cubes by freezing orange and lemon slices with water in a plastic container (ice cream tub or similar).