Kensington Palace spokesman confirmed Wednesday that Meghan's "engagement due to crowd management issues was slightly shortened."
The prince also participated in a National War Memorial ceremony commemorating both Fijian and British forces.
The Duke and Duchess are on a tour of the region. After several days in Australia, the couple flew to Fiji on Tuesday, where they were warmly welcomed by the residents who lined the route despite the rain. The couple will visit Tonga and New Zealand before returning to Australia.
The visit comes 65 years after Harry's grandparents, Queen Elizabeth II and Prince Philip, visited the island kingdom after the queen's coronation.
Harry and Meghan stayed in the same hotel as the Queen and Prince Philip at the Grand Hotel Pacific in 1953 and waved to hotel guests from the hotel's balcony before attending a state banquet in honor of President Jioji Konrote
During an official visit to the University of the South Pacific, both spoke with Meghan, who gave a speech promoting education and women's rights.
"Everyone should be given the opportunity to receive the education he wants, but most of all the education he can receive, and for women and girls in developing countries, this is vital," she said in a traditional South Pacific Lei.
The Prince warned of the dangers of climate change and recognized its impact on low-lying Pacific Island states.
"We know that young people are the future of the Commonwealth … they will be the ones most affected by the global challenges that affect us all, but you are the leaders who create the solutions," he said.
"One of the biggest challenges is undoubtedly climate change, and everyone living here faces this threat in their daily lives."