The arrival doesn't bother me like it seems to have twisted the pants of the reporter. They walked down the path/road instead of been driven up and "discreetly entering the church". If they had arrived in a car to enter the church, the reporter would still have complained it was done to Be Seen. Despite Peter's mother being the Princess Royal and he's her son, he doesn't have a title so it was, more or less, a private wedding. The couple can invite whomever they wish.
It's more of the media condemning Beatrice and Eugenie for the sins of their parents. The implication that both women had more to do with Epstein has yet to be proven by the media. The problem with their rent free living is up to the King and he isn't worried or chooses to ignore it.