If this is a party just for grown-ups, make sure your bar is stocked to cater to everyone's tastes.
Not lucky enough to have your own bar? Clear a whole kitchen worktop for the purpose. Avoid keeping food in the same space in case of spillages - no one likes soggy canapes!
Ensure you have enough glasses for all of your guests - from high-ball to tumblers, wine glasses to champagne flutes - and tons of ice on hand to keep the drinks (and the atmosphere) chilled to perfection.