It’s only been three days, and already Meghan Markle and Prince Harry are full on Duke and Duchess living, having made their first appearance as a married couple in honor of Prince Charles’s 70th birthday.

The garden party at Buckingham Palace, which honors Charles’ patronages, military affiliations and charities, also paid tribute to first responders of the terrorist attack at Ariana Grande’s Manchester concert in May 2017, reports People magazine.

Harry and Meghan didn’t leave for a romantic honeymoon right after their nuptials. Instead, they chose to stay and celebrate Charles’s big day. “The couple will be going on honeymoon, but not straightaway,” said Kensington Palace spokesman Jason Knauf. “They will have their first engagement as a married couple in the week after the wedding.”

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