While cocktails are big today, the key to pulling off a party is keeping things simple and under control. Wine, been and soft drinks; punch, like a sangria work. It’s not necessary to serve hard liquor to order.
Even so, a bartender is a joy. Are you near a college with a restaurant school? We used to hire senior (i.e., 21+ years old) students for big parties. p They were adorable, affable, efficient and worth every cent. They know how to maintain a clean station, and when to suggest a certain beverage when supplies get out of balance, like a different bottle.