The Duke and Duchess of Sussex have arrived in Australia for a four-day tour which will see them combine visits to charitable causes alongside private, money-making engagements. The couple - no longer working royals and visiting in a private capacity - will meet patients and medics at a children's hospital, military veterans and their families, and survivors of family violence. The schedule reflects the commercial aspect of the trip, with Harry due to give a keynote speech at a summit where tickets cost up to A$2,400 (£1,260) per person. Meghan will hold an 'in-person conversation' at a women-only 'girls weekend' in Sydney hosted by the producers of the Her Best Life podcast. It is unclear how much they are being paid for these engagements. The couple landed at Melbourne airport around 06:30 on Tuesday (21:30 BST Monday) on a commercial Qantas flight from Los Angeles. This trip marks their first visit to Australia since 2018, when they spent around nine days in the country as part of an intense tour. Unlike their previous trip, there are no public meet-and-greet events planned. Following their decision to step down as working royals in January 2020, Harry and Meghan are visiting as private citizens and say their trip is privately funded. However, concerns have been raised about whether Australian taxpayers are covering costs related to police security during their visit, with questions about what financial responsibilities their events entail. Police in Victoria and New South Wales confirmed that they will maintain a security presence during the visit.