But according to a source close to Markle, the one rule that frustrates the Duchess the most is that she can't address all the drama surrounding her dad, Thomas Markle Sr.
For example, thanks to the palace having its own press office, Meghan no longer uses her own PR person!
Of course, Meghan has worn suits while out with Harry before. However, during her recent two-day trip to Ireland, the new Duchess of Sussex told a fan that she misses working on the popular US legal drama Suits.
Meghan Markle's family members continue to make headlines with their claims about the new duchess, and Hollywood has taken note. During a trip to Dublin earlier this month, the 33-year-old royal was greeted by a well-wisher, Elaine Adam-Stewart, 43, who cheekily suggested that Harry should follow in her footsteps and have five little ones.
Promoting the new movie at Comic-Con in San Diego, California on Thursday, Munn revealed Black once dated Samantha Markle, who attacked her estranged sister Meghan earlier this week over the royal family's treatment of her father.
Courtesy of iTV
"Enough is enough", she added. "If our father dies I'm holding you responsible, Meg!"
Thomas has said that he hasn't spoken to his daughter ever since he first appeared on Good Morning Britain to talk about Meghan's new life and what he thinks of the royal family.
Duchess Meghan and Prince Harry are reportedly getting a new home thanks to Harry's grandmother, Queen Elizabeth II. The Daily Mail reports that the newly minted Duke and Duchess will soon be moving into Adelaide Cottage, the home that once belonged to Princess Margaret's lover, Group Captain Peter Townsend.
He said he doesn't blame Meghan for not inviting them to the wedding. "The royal family has had more than their fair share of scandals".
Another wrote that the rules should be a nonissue: "She doesn't need to abide by their arbitrary social rules", the commenter said.
"She reached the point where she didn't want to invite anyone".