King Charles and Queen Camilla appeared to break royal protocol while travelling between Sydney and Samoa.
The royals were pictured leaving an Australian aircraft as they touched down in Samoa.
The Royal Family is also supposed to travel with flagship UK airline, British Airways, while on tour.
The King and Queen arrived in Samoa for his first CHOGM meeting since becoming Head of the Commonwealth.
King Charles wore a full great suit and a blue tie with white spots, while the Queen was dressed in pink and completed the look with white trousers.
Reuters
The King wore a full great suit and a blue tie with white spots, while the Queen was dressed in pink and completed the look with white trousers.
The Royal Family are also required to change whilst travelling to appear smartly dressed when arriving on a royal visit.
A Royal Family biographer, Marcia Moody, said: “Last-minute briefings are given on the plane, and the royals change out of travelling clothes into their outfits at the last minute to avoid wrinkling or spills.”
“Adhering to dress codes means that for some countries, hemlines, sleeve lengths, and necklines need to be considered.
"Men may need tie pins, medals, sashes and handkerchiefs. Women often pay respect to the country with a national flower or symbol incorporated into their clothing.
The royals were pictured leaving an Australian aircraft as they touched down in Samoa.
Reuters
She added: "Symbolic colours are chosen, significant jewellery decided upon.”
Two doctors accompany King Charles as he travels around Australia and Samoa as he has paused his cancer treatment until he returns to the UK after the conclusion of the royal tour.
Royal expert Gordon Rayner said that royal navy doctors would always be a few paces away from the King.
Rayner says that the doctors carry medical equipment, including a mobile defibrillator and emergency medicine, in case of emergency.
The King and Queen are also required to be busy during the tour, only resting one day on Saturday 19, the day after landing in Sydney, to recover from the long journey.
The King was pictured drinking a mildly narcotic ‘ava drink from a coconut on arriving in Samoa.
Reuters
Since then, the royals have been seen every day attending 36 engagements during their nine-day tour.
King Charles and Queen Camilla are also required to learn basic greetings and cultures in the countries they are visiting.
The King was pictured drinking a mildly narcotic ‘ava drink from a coconut on arriving in Samoa.
Following Samoan tradition, he poured the drink onto the ground before he drank.
The drink is used in celebrations and rituals of Pacific islanders and was also drunk by Queen Elizabeth II during her visit.
