pasta salad per person? I usually do 6 pounds dry pasta per 100 plus add-ins, which are approximately equal to the cooked volume. This is about 1 ounce dry pasta per person, which is about 2 ounces cooked, plus add-ins- say 4-5 ounces all together
caesar salad per person? See the plan for 100 page. About 4 ounces, not counting croutons.
veggie trays? 2 ounces ready to eat veggies. 1 cup dip per 5 if thick, per 6 if thin.