Harry and Meghan visit Bondi Beach, Harbour Bridge on day four of tour

After a meeting with Prime Minister Scott Morrison at Kirribilli House, the Duke and Duchess of Sussex's official schedule for day four of their Australian tour has come to an end. 

Tomorrow marks perhaps the most significant day of their tour, with the pair attending the first event of Prince Harry's Invictus Games - the Jaguar Land Rover Driving Challenge - on Cockatoo Island at 9.30am. 

Later, Harry and Meghan will attend a reception at Bennelong Restaraunt at the Opera House. The structure's forecourt will serve as the site of the Invictus Games' opening ceremony at 7.30pm.

The couple will spend several hours watching the festivities, with the forecourt expected to be packed to the brim with participants from 18 competing nations. 

Royal watchers are expected to flock to the harbour to observe the event from a distance, which will also be broadcast on ABC 1. 

The Duke and Duchess of Sussex have met with Opposition Leader Bill Shorten and his wife Chloe Shorten at Admiralty House in Kirribilli.

The couples had a seat in the house's meeting room in front of a media pack, Meghan still wearing the midi dress by Roksanda Ilincic that she wore to Macarthur Girls High School in Parramatta earlier this morning.

Prince Harry swapped his Invictus Games shirt and chinos, worn earlier this afternoon during the Sydney Harbour Bridge Climb with Prime Minister Scott Morrison, for a classic black suit and pale tie. 

The Duke of Sussex looked relieved to have a seat after climbing the bridge. He told the Opposition Leader, "There's a lot going on".

Prince Harry and Meghan are expected to meet with Prime Minister Scott Morrison later this evening.

Bill Shorten has pledged to hold a plebiscite on Australia becoming a republic if Labor wins the next federal election.

Prince Harry and Prime Minister Scott Morrison have arrived via motorcade to the Sydney Harbour Bridge, where they will climb the iconic structure. 

The visiting royal was just visible at the base of the bridge from the Channel 7 chopper, wearing a harness and surrounded by BridgeClimb Sydney personell.

When they reach the top of the bridge, the pair will mount the Invictus Games flag, signalling the official start of the event in Australia. 

The harbour city is currently sitting at 26 degrees and skies are clear - the perfect weather for the event!

The reaction to the whirlwind visit was, perhaps unsurprisingly, overwhelming positive. Rhiannon, 15, said: “When they walked in I felt like my heart stopped. Their presence just made everyone shocked. I never thought this would actually happen at our school.”

After the dance routine, the royal couple went to the library to learn about a year 9 project about social justice and women and youth empowerment. Next, Harry and Meghan sat at school desks with 18 pupils in a classroom to learn about the NRL's In League In Harmony program focusing on building a positive sense of self, setting goals, appreciating diversity, developing communication skills and working with others to achieve common goals.

And then it was over. Just 30 minutes, but the girls were blown away. Maithly, 15, said: “It was a lovely experience and beyond anything I would have ever expected."

Nirel, also 15, said she was left “speechless”.

It was probably one of the quietest visits Prince Harry and Meghan will make with just a dozen or so women gathered at the end of the closed off street. Vi Lloyd said she thought the itinerary was quite hectic.

“They were in late from Melbourne and up early for Bondi. I am surprised she’s (Meghan) coping so well. If she’s got morning sickness, she’s getting over it and coping very well because she must be tired.”