Princess Diana came from an extremely wealthy family, but Camilla also comes from a very wealthy family too, so I don’t understand why the royals wanted him to marry Diana and not Camilla. I could understand if Camilla came from a middle-class family, but she didn’t.
Camilla was considered to have been more “around”. The palace, not necessarily the Queen, found that to be abhorrent.
She was divorced. Everybody knows that God doesn’t like divorced women.