At the ceremony, the Duke of Sussex said the performances from the competitors from 18 nations had been humbling and inspiring.
As they were both getting ready in an upstairs room at Government House, a sprawling mansion built in 1910, an unidentified person set off a smoke alarm in a downstairs toilet.
As the group of boys put on their show, complete with mosquito-like buzzing noises and group choreography, Markle was spotted laughing and sharing in the moment with Prince Harry, seated next to her.
As the publication pointed out, she accessorized her look with an aquamarine ring that belonged to the princess.
Sophie Hubbard and Hope Watson were among the many well-wishers who welcomed the couple to Wellington, New Zealand. She said Harry responded: "What, waiting around at Government House in the cold?" and the couple both laughed.
Harry and Meghan will land in Wellington about 3pm local time, and will be headed to Pukeahu National War Memorial Park.
Following the Australian leg, they traveled to Fiji, where their royally fun excursion continued.
Although the tour is almost two weeks in now, the enthusiasm hasn't waned among Kiwi fans, with roars erupting as the royals arrived at their first public event in the country.
While Harry and Meghan have struck up plenty of new friendships during their visit, the prince was also thrilled to catch up with 98-year-old war widow Daphne Dunne, whom the prince struck up a friendship with during his last two trips to Sydney.
"There was an aircraft on the runway a little slow to roll.so the decision was taken to abort the landing", went the announcement from the flight deck, according to the BBC.
"I want to be a fashion designer when I grow up - this is a good start", she said.
Their itinerary over the following three days includes a hike and barbecue in the Abel Tasman National Park at the top of the South Island, a reception with Ardern at Auckland War Memorial Museum and a visit to the popular North Island tourist resort of Rotorua.
However Meghan delighted the locals by joining Harry for a romantic afternoon walk along a jetty.
She chose a platinum tiara inlaid with ten diamonds.
Britain's Prince Harry and wife Meghan were greeted by rapturous applause on Saturday when they arrived for the final day of the Invictus Games in Sydney.