What does the theme of Roman Holiday show from the side?

I think the most important point in the brief description of Roman holidays is that many things are not up to you, whether they are princesses or civilians.

The princess knows her responsibility to the country, so she must go back; Joe didn't want to use those photos to damage the image of the princess, because he wanted to keep a true love for her, so he resolutely gave up the money. The officials and servants around the princess watched her grow up, but how could they not know her mind? But in order to protect the face of the country and the court, they dare not make an exception. They can only play dumb in front of the princess. ...