I've done one. I was called a little over a week before feast and told that the people who had volunteered to bring bread and meat had suddenly had an attack of life and had to bow out.

With the help of the Kettle and Trumpets emergency feast squad, we produced:

Roast beef
Chicken in a citrus marinade
Chicken soup
Peasecods in butter
Ham
Homemade mustard
A sauce for beef (beef juice, verjuice, garlic, and breadcrumbs)
Green sauce
Barley
Homemade bread
cheese.

It worked. And came in at about 1/2 the projected cost per person, so we fed even more people.