As we were discussing the new documentary on Prince Charles 'Son & Heir' and making reference to past portrayals, I came across a previous documentary (see below) which brought out some of the bad press Charles received during the 1980s and 1990s in particular.
The below documentary also provides an overview of Prince Charles' upbringing with inclusion of some particularly funny b&w film clips of Charles in school drama skits. There's a hilarious bit with Charles and another guy making a short comedy film in which Charles is being trained to be a pilot and he speaks in a squeaky, sissy-like voice. Really funny stuff. I wonder whether Charles' sons have seen any of the comedy/drama footage of Charles at Cambridge, and the funny short film Charles appeared in sometime after he left Cambridge. Apparently, Charles enjoyed acting, and he's an excellent mimic, with a facility for doing different voices. He possibly could have made a career in acting, had he not been a British royal and a king-in-waiting.
Perhaps Prince Charles and Meghan struck it off well when they met in part because they have acting and creative interests in common, and they are both very bright, articulate individuals. The documentary points out that Diana was simply not Charles' intellectual equal. I think it's more that Diana had different interests entirely and she was too young, and they were both too emotionally needy, and above all, Charles was in love with someone else. Camilla is less needy emotionally and she has a more 'mothering' dynamic to her relationship with Charles. However, I don't think Camilla is much of an intellectual on Charles' level either, but she is very savvy about personal interactions generally, and she's Charles' age, and she gives him a lot of understanding and emotional support.
In fact, Prince Charles is now very happy in his private life, which has made his latter years more mellow. The below documentary is also interesting for it's descrition of Charles' relationship with his mentor, Laurens van der Post: