Standard African practice, I'm afraid.
Years ago we had a scheduled flight from europe to Abuja. Notam stated presidential movement around our arrival time, until further notice. We left with an additional two hrs of fuel and spended one and a half hrs holding on final 10 miles out. No movement at the airport whatsoever. And yes promisses that it would take another 30 minutes. Luckily for us the presidential party departed within our fuel window. Otherwise we would have diverted to Lagos.
ps,
None of our passengers fainted, they seemed to understand.