Two elements have been stressed:

1. It will be a private visit, so no opportunities for them to all be photographed together. It also means that She will be protected from the public so there will be no footage of Her being booed.

2. They will meet at Sandringham, again away from ears and eyes. They've been offered accommodations on a royal estate, but we don't know if they'll be in the house or a cottage on the estate.

All of the information is one-sided, and nothing has been confirmed by BP. Charles has issued an invitation to Them every year, and every year it's turned down.

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