I don't know how much pop (or ingredients for punch) to buy. Our wedding will be dry as it is out of town and a good chunk of family on both sides cannot handle their alcohol. We do not want to risk family members drinking and driving nor can we afford the alcohol as we are also on an extremely tight budget. We are looking at about 150 people. I understand that not many people will stay late with it being dry and therefore I am unsure how much to purchase. Any suggestions would be great, and no we are not going to change our minds about the alcohol.