The celebrations saw the Duke and Duchess of Sussex enjoy a weekend of sightseeing, eating and drinking to celebrate Soho House founder Nick House's 55th birthday and the opening of the latest branch of his exclusive members' club chain.
Prince Harry and Meghan Markle's flight touched down at Sydney Airport just after 6am, but they are expected to have a quiet day on Monday as their official duties for their 16-day tour start on Tuesday.
The tour coincides with the Invictus Games in Sydney, which run from October 20 to October 28. It looks like Meghan and Harry's touchy-feely vibes were contagious, because Prince William and Kate Middleton (who were sitting next to them) also had a rare PDA moment: They were photographed holding hands in the pews. Although the royal couple have over 80 engagements arranged throughout their special trip, the main event on their itinerary is this year's Invictus Games which will be held in Sydney. They will return for the closing ceremony.
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Eugenie, the daughter of Prince Andrew and Sarah Ferguson , is the only royal family member with a public Instagram account. And with the presence of so many royals - and a number of celebrity guests - extra security measures have been put in place.
In Fiji, Prince Harry will pay tribute to Fijian war veterans and the couple will attend a state dinner, before flying to Tonga.
The Duke of Sussex will follow in his mother and father's footsteps when he touches down in Australia with his new bride for their first official tour together.
"The duke and duchess are very much looking forward to experiencing the unique cultures and customs of those four Commonwealth countries and have asked that this tour allow them opportunities to meet as many Australians, Fijians, Tongans, and New Zealanders as possible".