#37: No Public Displays of Affection
When it comes to the royal family, PDA is generally frowned upon, as members are expected to maintain a certain level of decorum and professionalism when appearing in public. This means that displays of affection such as hugging, kissing, or holding hands are typically kept to a minimum if they occur at all.
However, in recent years, there have been some notable exceptions to this rule. For example, Prince William and Kate Middleton have been seen holding hands and even sharing a brief kiss in public on occasion, while Prince Harry and Meghan Markle were known for their more affectionate displays of affection during public appearances.