I mean, the guest list in the overall plan will be e.g. all past prime ministers, the ambassadors of xyz, knights of the garter/whatever.
When the time comes the names will be slotted into each category.
The ceremonial will be 'the person in x role' will do y - which is why Penny Mordaunt carried the sword! Not because she had any expertise in sword carrying, simply because she was in a specific role that had been allocated the sword carrying job.
No need to review weekly.
I call bullsh*t!