I can understand why Charles would be going. They did have children together, and whether or not Diana cared for him in the end, they did both have joy in their children. I think that Charles should go simply as a support for his children. I think that it would be the same in any situation such as this.
I just think that it is in poor taste for Camilla to go, simple beacuse of the way that Diana felt about her. Good for the princes that they are moving on, but the fact of life is, they, their mother, and Camilla, as well as their father are public persons. There are certain things that they have to do to maintain their station in life, and certain things that the world expect of them because of that station.
Is that fair? Probably not, but it is the way it is. I wonder if we asked the parties involved what they would rather, what they would say? I would rather be a private person with all the privacy, problems and misery as well as happiness and mundane every day issues that a private person has, or would they rather be just as they are with the issues, problems, and priveledges that come with their position?
We will never know, but we can express our opinions here, and my opinion is that she should not go, or if she does, she should jkeep a very low profile. The memorial should not be about her, her attendance or the unholy mess the three of them created, but about Diana.