Further to my last posting on this, I saw the film on Friday evening with my girlfriend.
It was good, if a little cliched, and some of the dialogue was clearly for the audiences benefit and not for the characters concerned, such as matters of simple protocol etc..
In the end one felt for her. Whatever one thinks of her actions during that week, she got a bit of a mauling from the public which was somewhat unfair. It's easy to forget that the Royal Family are not just an institution, they are a family as well, and forcing a family to greive in public seems, well....
But those are the dilemmas of having a public and personal life intertwined with duty.