Diplomatic precedence is not invented per event. The Vienna Convention on Diplomatic Relations, done at Vienna on 18 April 1961 and in force since 24 April 1964, sets out how heads of mission are classed and how precedence within each class is taken - in the order of presentation of credentials [1]. Everything a host improvises on the day is either consistent with that framework or visibly not.
What actually has to be decided in advance
The protocol sheet: decided before the delegation lands
Eight decisions. None of them expensive. All of them irreversible once the delegation is through the door.
The motorcade is a timing problem
A motorcade looks like a security arrangement. Operationally it is a timing arrangement: the point of the vehicle order is that the right person reaches the right door at the right moment, with the greeting party already in place - not walking out as the car pulls up.
Improvised arrival versus a protocol run sheet
What a host desk owns on the day
- One run sheet, in both delegations' working languages, issued the night before.
- One named person at each threshold: aircraft door, terminal, forecourt, venue entrance, room.
- Vehicle order and driver names printed, briefed and confirmed by the drivers themselves.
- A written seating plan the venue cannot quietly change.
- A single number that the visiting mission's own staff can call - not the host's switchboard.
The bottom line
Protocol is not a matter of taste. Precedence has a legal frame [1]; the rest is logistics with an audience. Write the eight decisions down before the delegation lands, give one desk the run sheet, and the visit is remembered for what was agreed in the room.

