For someone who, like most modest birthday boys of a certain age, apparently told his family 'not to make too much of a fuss', Prince Charles might be forgiven for a lie-in this morning.

After two large-scale parties already this week, the Prince's 60th birthday celebrations continue on Saturday with a more informal get-together at his home in the West.

The Prince's Highgrove home, or at least the orangery function room he had built 10 years ago, will be transformed into the home of The Kumars at no.42 – the Asian TV family sitcom-chatshow which the Prince and the Duchess of Cornwall are said to be fond.

The Prince has become friends with its stars, actors Sanjeev Bhaksar and Meera Syal, and with the party organised by Camilla, the pair have been given the job of entertaining the exclusive guest list.

Sanjeev and Meera, married in real life, play a grandson and grandmother in a family who stage a chatshow from their own front room. On Saturday's private show, it is understood that the likes of Stephen Fry, Rowan Atkinson and Joanna Lumley will take part in the show.

It is likely the guest list for the bash will be a eclectic mix of the Prince's showbiz  pals along with long-standing friends from the Cotswold country set. His sons William and Harry will be there, along with their girlfriends Kate Middleton and Chelsy Davy.

The star-turn of the night is certainly Camilla's idea. Her favourite ageing rocker Rod Stewart has agreed to waive the reported £1-million fee he would normally charge to sing at a birthday party – his performance of classics like Do You Think I'm Sexy and Maggie May is understood to be his gift to the royal birthday boy.

The Prince, who it was revealed this week wears earplugs when he is required to attend rock concerts, will probably enjoy the food and comedy show more. While the menu is being kept a secret, it is understood to be made up largely of food from the Prince's own Duchy range, along with local produce.

On Friday, the Prince's home town of Tetbury was marking his 60th birthday in understated terms, private cards and presents were being ferried the mile down the road to Doughton every so often while the owner of the Blue Zucchini brasserie opened a comments book for customers to send wishes to the Prince. Pernille Colby said she would pass them on.

Saturday's event rounds off a succession of parties and more formal occasions to mark the 60th birthday of the heir to the throne. Earlier this week he travelled to Paris with Camilla to dine with the French President Nicolas Sarkozy and his wife Carla Bruni, to mark the 90th anniversary of the end of World War I.

Then he returned to enjoy a comedy night at a theatre in Wimbledon – which will be screened on ITV on Saturday – before Thursday night's state occasion at Buckingham Palace.

The plans were the result of meticulous planning between the Queen, the Duchess, the Prince's own events maestro and former secretary Michael Fawcett, and bosses at the Prince's Trust, who staged the theatre show.

On Friday, on his actual birthday, the Prince visited a succession of projects for children in inner city areas backed by the Prince's Trust, before returning home for a family dinner and to receive some of the 60 individual presents, personally wrapped by his wife.

The only hiccup, or at least the only one made public, was the artistic strop thrown by the conductor of the London Philharmonic Orchestra, Riccardo Muti. His orchestra, of which Prince Charles is patron, was due to perform at Buckingham Palace on Thursday, but refused to after being asked by the Queen and Prince Charles to shorten the performance. The conductor had lined up a succession of classical pieces, but sniffed to Italian reporters he was asked to cut it to God Save the Queen and a piece by a British composer. A chamber music group was brought in instead.