You'll be better able to keep things under control. Before the party, ask someone reliable to help you if problems crop up. Provide alcohol-free drinks, such as coffee, tea, pop, fruit punch, juice and water. Serve non-alcoholic wines and cocktails. Mix and serve drinks yourself or designate a bartender.
Guests usually drink more when they serve themselves.
Best bets are meats, vegetables, cheeses, and breads. Avoid salty, sweet or greasy foods, because they make people more thirsty. Don't plan physical activities. People are more prone to injury or mishap after drinking. Stop serving alcohol at least an hour before the party ends.