Andrew Mountbatten-Windsor and Sarah Ferguson are believed to be planning "some sort of party" at Royal Lodge before their exit from the 30-room mansion occurs.
The pair were not invited to Christmas at Sandringham this year, following King Charles stripping Andrew of his royal titles.
The former Duke and Duchess of York were reportedly wanting to do "all sorts of entertaining" this festive season, making the most of Royal Lodge as their departure beckons.
Royal biographer Andrew Lownie, author of Entitled: The Rise And Fall Of The House Of York, suggested that despite their downfall, the pair would still be throwing one last party.
Andrew Mountbatten-Windsor and Sarah Ferguson are believed to be planning 'some sort of party'
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Mr Lownie said last week that the guest list would be with "friends that go a long way back and have stuck with them".
A source told the Daily Mail: "There is to be some sort of party for their last remaining friends over Christmas.
"I'm not sure they've labelled it a 'farewell' party, but it very much looks like a last hurrah."
Andrew has been in the headlines following the release of thousands of the Epstein Files, with the former prince featured numerous times.
The duo's party is thought to be 'a last hurrah'
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Newly released documents from the US Department of Justice revealed that convicted sex trafficker Ghislaine Maxwell attempted to arrange for "intelligent, pretty and fun" women "from good families" to meet a friend she referred to as "Andrew" during a 2002 trip to Peru.
The correspondence, forming part of approximately 8,000 files published on Monday evening - the largest batch released to date - shows Maxwell coordinating arrangements for someone stored in her contacts as "The Invisible Man".
Although the individual is not named in the documents, Andrew Mountbatten-Windsor undertook a six-day official visit to Peru in March 2002, commemorating the golden jubilee of his mother's reign.
The documents do not allege any criminal wrongdoing in connection with the trip.
Emails from Ghislaine Maxwell show plans to introduce 'intelligent, pretty and fun' women to a man identified as 'Andrew'
| GETTYIn her message to Juanesteban Ganoza dated March 3, 2002, Maxwell wrote: "I just gave Andrew your telephone no he can ride but it is not his favourite sport some two-legged sightseeing (read intelligent pretty fun and from good families) and he will be very happy."
She continued: "I know I can rely on you to show him a wonderful time and that you will only introduce him to friends that you can trust and rely on to be friendly and discreet and fun he does not want to read about any trip in the papers [detailing] whom or what he saw."
Maxwell informed Ganoza to anticipate a call from "a very English-sounding gentleman."
Prior to Maxwell's email, The Invisible Man had responded enthusiastically to the proposed Peruvian itinerary.
Andrew has always denied any wrongdoing in relation to Epstein
| GETTYOn February 28, 2002, he wrote: "I am overwhelmed at the kindness and generosity of the offers that are being made for me. I would love to do them all but fear that there would not be enough time!"
Regarding female companionship, he added: "As for girls well I leave that entirely to you and Juan Estoban!"
Ganoza subsequently replied, asking about the visitor's age, expressing doubt about finding suitable matches locally but indicating willingness to try.
There is no implication that any illegal activity took place during the trip.
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