Per Plate or Buffet System?

Both have merits and demerits:
In the catering system that's usually called per plate the host has to just pay and leave all tensions to the caterers. This suits best for families with less on ground supporting members or less space and time. It's cost is more. In the self arranged system you jabe to deal with cooks and get all stuff arranged. On ground family members are needed to take care of this part responsibly and also time and spce is neede.
But this one is far more cheaper in cost than the first one.