The couple will land in Sydney, Australia on October 16, where they will spend nearly a week in the country, before flying to Fiji on October 23 and then to Tonga on October 25.
Australia will be their first stop on a three-week tour of the region, which includes visits to Fiji, the Kingdom of Tonga and New Zealand.
The Duke and Duchess will arrive in Wellington and will visit Abel Tasman National Park, Auckland and Rotorua.
While the newly minted Duchess of Sussex is protected by hordes of bodyguards as she goes about her new royal duties, including jet setting trips to Australia and tea with the Queen, her controversial father is in hiding and in fear for his life.
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Meghan's mother made her visits from Los Angeles after 74-year-old Thomas repeatedly criticised the former actress for "cutting him off" as they have not spoken since the day after the royal wedding, which the retired lighting director missed due to undergoing heart surgery.
"Meghan isn't pregnant, and she and Harry really don't pay much attention to all the rumors as they accept that it's just part and parcel of being who they are, especially given their status as newlyweds", the source explained.
Britain's Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex leave after the christening. They will depart New Zealand on Thursday 1 November. Next, they'll head to Fiji and spend a few days in Suva and Nadi. Following Fiji, on October 25, they'll visit Nuku'alofa, Tonga, before heading back to Sydney, Australia, on October 26.
As far as the focus of the tour is concerned, it looks like the environment and conservation efforts as well as youth leadership are going to be the main topics of discussion.