I refuse to do buffets unless each item is 'served' at Church lunches as the first in line piled on everything even for young children and then most of it was thrown away.The people at the end of the queue got almost nothing, and there were all these huge plates of food just lying on the tables.
Some people wouldn't even ask what it was and then announced that they had 'never liked that'; I would ask why they took it then, no anwser.
Just plain greed, eyes bigger than the belly!!!!!!!
If we are doing a Charcutterie/cheese and wine, I put 4 tables around the hall with exactly the same items on them then announce this, so we don't get big queues. Some people still go to each table,,,'just in case'!!!