Kate Middleton, Prince William and Prince George at the Big Help Out in May 2023.Photo: DANIEL LEAL/POOL/AFP via Getty Images

Prince William, Prince of Wales (R), Britain’s Catherine, Princess of Wales, tries her hand at archery while taking part in the Big Help Out, during a visit to the 3rd Upton Scouts Hut in Slough

WhenPrince Williammarried his college sweetheartKate Middleton, she brought her down-to-earth tone as she stepped into royal life — and now as parents of three, the Princess of Wales' non-royal background has a big impact on how the couple is raisingPrince George,Princess CharlotteandPrince Louis.

“Those children look pretty happy with life,” a palace insider tells PEOPLE in this week’s cover story. “A lot of it is the stabilizing normality Kate brings — and that’s how she grew up. William absolutely loves it.”

Despite their royal roles — especially George, who is second in the line of succession to the throne behind his father and will someday become king — Kate ensures that her kids' childhoods are as normal as possible.

“Coming from a different background, she appreciates theimportance of having family time,” says a source close to the royal household. “She wasn’t brought up in that aristocratic setting where you see the children for a short time each day.”

Princess Charlotte, Prince George, Prince Louis and Kate Middleton in May 2023.DANIEL LEAL/POOL/AFP via Getty

Britain’s Prince William, Prince of Wales (R) looks on as (L-R) Britain’s Princess Charlotte of Wales, Britain’s Prince George of Wales, Britain’s Prince Louis of Wales and Britain’s Catherine, Princess of Wales toast marshmallows as they take part in the Big Help Out, during a visit to the 3rd Upton Scouts Hut in Slough, west of London on May 8, 2023, where the family joined volunteers helping to renovate and improve the building. - People across Britain were on Monday asked to do their duty as the celebrations for King Charles III’s coronation drew to a close with a massive volunteering drive.

Kate’s childhood in the country helped inspire her love of the outdoors, and she has recalled how sheloved to go “boulder hopping"in the Lake District.

Prince George of Wales and Catherine, Princess of Wales PEOPLE COVER

“Royal families over the generations haven’t had the chance to get those foundations right, but they have,” says a friend.

Kate Middleton, Prince William and their children at Trooping the Colour 2023.Samir Hussein/WireImage

Prince George of Wales, Prince Louis of Wales, Catherine, Princess of Wales, Princess Charlotte of Wales, Prince William of Wales on the balcony during Trooping the Colour

Samir Hussein/WireImage

Of course, raising a future monarch is still front of mind for Prince William and Princess Kate, and Prince George is well aware of his royal role.

Prince George, who will celebrate his 10th birthday on July 22, had a formal talk about his royal destiny in 2020, biographer Robert Lacey previously reported. It was a “controlled moment of their choice,” Lacey wrote, “reflecting William’s unhappiness at the haphazard fashion in which the whole business of his royal destiny had buzzed around his head from the start.”

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LONDON, UNITED KINGDOM - MAY 06: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Princess Charlotte of Wales, Catherine, Princess of Wales (wearing the Mantle of the Royal Victorian Order), Prince Louis of Wales, Prince William, Prince of Wales (wearing the Mantle of the Order of the Garter), Page of Honour Ralph Tollemache and Prince George of Wales (in his role as Page of Honour) watch an RAF flypast from the balcony of Buckingham Palace following the Coronation of King Charles III & Queen Camilla at Westminster Abbey on May 6, 2023 in London, England. The Coronation of Charles III and his wife, Camilla, as King and Queen of the United Kingdom of Great Britain and Northern Ireland, and the other Commonwealth realms takes place at Westminster Abbey today. Charles acceded to the throne on 8 September 2022, upon the death of his mother, Elizabeth II. (Photo by Max Mumby/Indigo/Getty Images)

Children’s wear designer Amaia Arrieta, whose clothes George and his siblings have worn for years, tells PEOPLE: “I think George has known almost from the beginning. He has always had a more prominent role — there have been many events with his late great-grandmother or great-grandfather when it was just him, and his siblings weren’t there. I think they must have had that conversation very early on.”

A palace insider adds, “I am sure [William and Kate] are making George aware in the best way they can. And not making it too burdensome.”

source: people.com