I'm making sangria for an evening grazing party for 40 guests with lots of finger foods, tapas etc. I'm having a disagreement about amounts.The recipe I use is tried and true and is always a big hit even with folks that don't usually like sangria. I use red wine, brandy, contreau, fruit juice and fruit with a splah of spakling water. Beer, red and white wine will also be available. How much snagria should I make? Thanks!