The visit starting Wednesday equals his mother Queens Elizabeth II's tally of 16 royal tours of the former British colony and comes as the monarch winds back her worldwide travel commitments. The British crown's power in Australia is largely symbolic, and while the Queen remains hugely popular, the monarchy is viewed by some as an anachronistic colonial relic.
Pictures of Camilla thumbing through a programme in the VIP box between her husband Prince Charles and Australia's Prime Minister Malcolm Turnbull were widely circulated on social media, prompting some users to criticise the 70-year-old for failing to show more appreciation.
"I didn't obviously see what you're referring to but she was enthusiastic in any dealing I had with her and was really positive", Beattie said.
"He is very, very knowledgeable and has had enormous experience over his long career as the Prince of Wales".
Prince Charles then continued on so the reporter then proceeded to ask the Duchess of Cornwall the same question.
Commonwealth Games organisers defended Prince Charles's wife Camilla on Thursday after criticism that she looked bored at the opening ceremony.
Paintings of the Scottish Highlands are also taken out and about too, the book claimed.
Upon arrival, the couple was greeted in Brisbane by Governor-General Peter Cosgrove with a 21-gun salute.
Prince Charles isn't the only member of the royal family now facing revealing claims from an unauthorized biography.
Charles has declined a cheeky invitation to explain why he, and not an Australian, should become the nation's next head of state in a speech during his Australian visit.