To officially welcome the Invictus Games to the city, the duke, Prime Minister Scott Morrison and athletes will scale the bridge to plant the Invictus flag.
To celebrate this occasion, the Prime Minister and The Duke will be joined by four competitors from the 2018 Australian Invictus Games team, Mr Luke Hill, Captain Ruth Hunt, Ms Heidi Joosten and Mr Michael Lyddiard as well as Ms Gwen Cherne whose late husband Peter Cafe served in Cambodia, Timor, Afghanistan and Iraq.
Tomorrow, the couple will watch the Invictus Games driving challenge at Cockatoo Island and attend a welcome reception held by NSW Premier Gladys Berejiklian, before the opening ceremony at the Sydney Opera House.
They added it all was worth it to now have a souvenir of the time Prince Harry kicked them off the Sydney Harbour Bridge.
Prince Harry, who founded the Games in 2014, is with Meghan Markle in Australia on a Royal Tour coinciding with the Games.
The couple earlier Friday walked barefoot on Bondi Beach to meet a group of surfers focused on mental wellbeing. "They are showing that mental health does not discriminate", OneWave co-founder Grant Trebilco said.
"She said it's so good for healing her mind", Connell added.
Harry and Meghan will also visit Fiji, Tonga and New Zealand during their 16-day tour. Two men wearing Union Jack "Budgy Smugglers" as they wait for Britain's Prince Harry at Bondi Beach on October 19.
Let's get a look at what Harry's climb looked like from afar.