[@Ruby] Lyeelia Vahsi (if foreign dignitaries are invited to court for the coronation, which I assume they would be? Not sure.) would be there. Though originally sent as an ambassador for the green's she would take on the mantle of peacetime negotiation.

Also with no one playing the Martells themselves, if they are in attendance then Darios Vahsi likely would have been brought along, as they are looking for a sword-master for his education.