Our daughter graduates HS soon and we are putting the party together. We sent out around 120-150 invites and I am responsable for most of the food prep.

We are trying to determine how much food/drink/ect: to plan for. We dont want to run short but don't want a ton of food wasted or left over.

We are roasting a hog (half most likely) and making pulled pork sandwiches.

How does one consider the amount of food for such a party with such unknown variables???