having a birthday party for my wife, with about 50 guests. we will have a bartender and a waiter. we wil have mostly appetizers. we will have mulled wine, red and white wine, beer, and I want to get stuff to make up a good bar, so that the bartender can make a wide range of drinks. so, please guide me - what should i get? suggest quantities, suggest brands, as well. although, to be pretty clear, I don't want to buy premium brands to have my friends drink.