The Duke and Duchess of Sussex have arrived in Australia for a four-day tour which combines 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 also reflects the commercial aspect of the trip, with Prince Harry due to give a keynote speech at a summit where tickets cost between A$1,000 and A$2,400 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 Prince Harry and Meghan are being paid for the commercial events.

The couple landed at Melbourne Airport around 06:30 on Tuesday (21:30 BST Monday) on a commercial Qantas flight from Los Angeles.

This marks Harry and Meghan's first trip to Australia since 2018, when they spent nine days in the country as part of an extensive tour shortly after their marriage.

While crowds welcomed them during that visit, this time there are no public events scheduled.

Since stepping down as working royals in January 2020, the couple has opted to visit as private citizens, stating that the trip is privately funded. However, there are questions about whether Australian taxpayers are covering any costs associated with security.

The visit will cover Melbourne, Canberra, and Sydney, focusing on causes close to their hearts, but also allowing them to personally profit from the events.

Prince Harry is expected to speak at the InterEdge Psychosocial Safety Summit in Melbourne, with a portion of the proceeds going to the charity Lifeline. The BBC has inquired about whether the Duke is receiving a fee for this engagement.

Meanwhile, Meghan's participation in the wellness retreat, which is priced at A$3,199 for attendees, has raised further interest regarding potential earnings she might gain from this event, which has not sold out yet.

There are suggestions that Australia may become a market for Meghan's As Ever lifestyle brand, as she registered trademarks in twelve product categories in the country last year.

The couple has chosen to avoid public meet-and-greets to minimize disruption, and while security measures are planned, it remains unclear who will ultimately fund these provisions. Both Victoria and New South Wales police are prepared to ensure safety without revealing the financial responsibility involved.

Harry’s security arrangements come under scrutiny following a court ruling regarding his protection status in the UK. This tour represents the couple's first public appearance since news of a defamation lawsuit against Sentebale, the charity Harry co-founded.