The event was held to honor the work of Prince Charles' charities and His Royal Highness' milestone birthday, which isn't until Nov. 14.
With their royal wedding now behind them, Harry and Meghan are expected to jet off to their honeymoon soon, and according to royal expert Katie Nicholl, Africa is “without a doubt, the destination” for the pair, whose third date involved traveling to Botswana. They are also believed to have returned there for Meghan's birthday.
“One wonders if perhaps the reason they're doing this engagement today is to put the spotlight back on them, so they can then slip off quite quietly," Nicholl tells ET. "We've had the wedding pictures, we've had the first engagement, so I'd imagine at some point in the next week to 10 days, things will go very quiet on the Sussexes and that will probably be because they've crept off very quietly to go [on] what Harry is determined to be a private honeymoon.”