After celebrating the festive season with grannyQueen Elizabeth,Prince George,Princess CharlotteandPrince Louispiled into the backseat of their parents’ car and rode home to Kensington Palace.

Prince WilliamandKate Middleton, who wore a festive red plaid ensemble, were all smiles from the front seat with William behind the wheel.

“They look after each other but in different ways,” a friend tellsPEOPLE in this week’s cover story. “Some people might say it’s an old-fashioned marriage, but it seems to work.”

Tim Rooke/Shutterstock

Prince William with Prince George and Catherine Duchess of Cambridge Royal family Christmas Lunch at Buckingham Palace, London, UK - 18 Dec 2019

Stephen Lock/i-Images via ZUMA

Prince Louis , Princess Charlotte and Prince George leaving The Queen’s Christmas Party at Buckingham Palace in London

Next week, the family of five will travel to the Queen’s Sandringham Estate in Norfolk for Christmas with the rest of the royal family. The royals have an annual tradition of walking to church on Christmas morning together.

A source tells PEOPLE that both George and Charlotte are set to make their Christmas Day debut this year alongside parentsPrince Williamand Kate — but that things could always change.Prince Louis, 1, made his big debut at Trooping the Colour this year, but he’s likely too young to join his parents and siblings on Christmas.

Prince Louis, Prince William, Kate Middleton, Prince George and Princess Charlotte.Tim Rooke/Shutterstock

Trooping The Colour

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Meghan, 38, and Harry, 35, previously announced they areskipping the annual holiday festivities at Sandringham this year. Meghan made her Christmas debut with the royal family in 2017 after the couple’s engagement was announced, and again in 2018 after they were married. The couple and their son Archie were absent from the Queen’s Christmas lunch on Wednesday as they are currently on a six-week break and reportedly traveling abroad.

source: people.com