It's been 17 years since Donald and Melania Trump married at the Episcopal Church of Bethesda-by-the-Sea in Palm Beach, Florida, with Hillary and Bill Clinton, Kelly Ripa and Mark Consuelos and Kathie Lee Gifford in attendance. ("It was quick but beautiful and perfect," Simon Cowell, another guest, told PEOPLE at the time. "I give it a nine.")

A lot has changed for the Trumps since their Jan. 22, 2005, nuptials, as the reality TV host-turned-former president and former first lady mark their wedding anniversary on Saturday with a low-profile weekend at home in Florida, sources say.

It's at their Mar-a-Lago Club that they have built much of their post-White House lives, even as President Trump continues to dash off baseless claims of election fraud and play kingmaker in Republican politics, where he is still widely popular.

The family is also the subject of various investigations, though they deny wrongdoing and say they're being targeted.

"Both are very happy to be in Palm Beach," a social source says of the Trumps. "Mar-a-Lago is their home and they could not be happier about that," this source says. "They do not miss New York."

"Donald plays golf regularly with political guys who fly down as well as with social friends from his club, and Melania keeps busy with her family, the spa at Mar-a-Lago and her own business and philanthropic interests," the source says.

Another source close to them says that "they will be spending the weekend at their home" and that the former first lady, 51, who largely avoided the public in the first year after leaving Washington, D.C., "is working on some exciting projects."

Among them: an auction of NFTs, art and clothing as well as more work with children. ("A portion of the proceeds will support children from the foster care community," Mrs. Trump's office has said of the auction.)

"Melania has her own fashionable interests and wants to do something with them to make money," another source tells PEOPLE, adding, "While Melania is a quiet and low-key person, she definitely has her own attitude and does pretty much what she wants — even if others don't get it."

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