"[Donald] always comes to the Mother's Day lunch then leaves," a club source told PEOPLE. "He is very routine [and] rarely deviates on anything in this area."
A source added that Barron and Melania are expected to fly back and forth to New Jersey and not move to the Garden State to be by Donald's side, as the former FLOTUS will stay behind to help her teenage son with his schoolwork and keep him “up to date on his extracurricular activities.”
"She has their relationship down to a science," the source added, referring to the Trump family dynamic, noting how fond the famously private former first lady is of Mar-a-Lago. "She does what she wants and also continues as Mrs. Trump, so it's unlikely to expect much out of the order at this point."
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OK! recently learned that Melania is “happy and relaxed” since fleeing the nation’s capital after Biden’s inauguration. Sources close to the former model said she is living by her own rules and “is not beholden to the norms of conventional post-first lady duties,” such as releasing a memoir and making multiple public appearances and speeches.
Although she has an official office with staff at Trump's Mar-a-Lago resort, Melania prefers to keep a low profile. A source alleged that she spends her day visiting the on-site spa for treatments (sometimes twice a day) and enjoys low-key dinners.
"She's not a presence at Mar-a-Lago at all. She's not mingling with people and rarely interacts with her husband's staff," a pal close to the Trumps dished, adding that she spends her afternoons with Barron and often dines with her parents, Viktor and Amalija Knavs — who spend weeks at a time at the South Florida resort, which functions as their seasonal home.