It has just been decided lunch is at my house for 16 (6 adults, 4 teenagers and 6 under 12)
I was doing for 9 anyway so not to many more

Nibblies;
Antipasto platter
Cheeses
Dip and bickies
Chips
Peanuts

Cold meats;
Ham
Turkey
Chicken
Prawns

Salads;
Rustic potato salad
Roast pumpkin and feta salad with pine nuts
Couscous salad
Potato bake
Coleslaw
Garden salad
Pasta salad

Extra;
Bread rolls
Turkish bread

Desert;
Pavlova
Trifle
Apricot nector cheesecake
Chrissy pudding
Chrissy cake
Optional custard and cream

Afters;
Mince pies
Little chocolate puddings