This is a "created" story by the Mail. She's married, five minutes have passed, and the news editor sends a reporter off to call the Palace and demand to know what Kate's itinerary is as a Royal. Will she be casting her veil to one side and, scissors in hand, be cutting ribbons left, right and centre up and down the country?
The Palace says no, they haven't got anything booked in yet. Because, you know, the wedding was only on Friday, calm down. Why not? demands the reporter. The palace point out she's basing herself on what the Duchess of Cornwall did, and say there are a couple of dates in the diary, but she's having a bit of breathing space first (don't forget William's off to the Falklands shortly so if she did it, she'd be doing it solo which would be a bit daunting).
The reporter reports all this back to the News Ed, and is despatched to write a sneery "idle Kate" story.