The bride’s father meanwhile, dismissed as rubbish reports of a pre-wedding crisis between the couple in comments to a South African paper.
The couple were formally wed on Friday in a civil service and said “I do” for a second time on Saturday in front of 800 royal and celebrity guests in a lavish ceremony rounded off by fireworks and a ball for 200 friends.
The brunch was held in the private gardens of the tiny principality’s royal palace, prepared by French chef and creator of the main wedding feast, Alain Ducasse, along with Joel Robuchon and palace chef Christian Garcia.
The royal couple were on Tuesday due to fly to Durban where 33-year-old Charlene trained as a swimmer and where the prince, 53, was due to attend a meeting of the International Olympic Committee of which he is a member.
The committee will on Wednesday vote to select the host of the2018 Winter Olympics.
In a statement Sunday ahead of the session, South African President Jacob Zuma said: “It is particularly special for us to welcome the newlyweds … to Princess Charlene’s home country.
“We continue to treasure the pride Princess Charlene brought to South Africa as an Olympic swimmer.”
The princess’ father Mike Wittstock meanwhile told the country’s Sunday Times newspaper of his delight at his daughter’s royal marriage.
“It’s just such a proud moment that I cannot describe. We are so happy for them,” he said. “It feels as if we’ve just won the World Cup.”
The pageantry was dimmed however by media reports on rumours that the bride-to-be had been intercepted trying to flee to South Africa earlier in the week.
Palace officials said only that there had been a “hiccup” in the wedding preparations when Charlene learned that Albert may face demands for a paternity test after a claim by a former lover.
“I am so disappointed that people believe this nonsense,” her father told the paper.
“I am also very disappointed in the South African media who picked up on the story and ran with it before finding out the facts for themselves. It’s rubbish.
“I was with them the entire time until late at night. It did not happen,” he said in an interview held late Friday night.
The wedding was broadcast live on South African television, and the Sunday Times splashed across its front page a photo of Charlene in her veil and gown, captioned “Fairy Tale”.
Monaco officials on Sunday also hailed the success of the celebrations.
“We are entirely satisfied with the way (the festivities) have gone,” said tourism chief Michel Bouquier.
Glamourous but at the same time warm-hearted, he described the wedding as “top class.”
No details of the couple’s honeymoon plans are to be made public, but a further party was planned on Thursday in Durban, palace officials said