For My Wedding Reception How Much Is Tax And Gratuity?

I live in Louisiana, our wedding will be in a banquet room at a restaurant. They charge 16 per person which includes eight food choices, tables, linen, chairs, gles, silverware, ice, soft drinks, water, set up and clean up. Beer is 3 per bottle and cash bar. 100 guest. We have to pay tax and gratuity aside from these prices. What taxes and how much gratuity is usually asked for and do I additionally tip any servers or bartenders.