Answer. Every event requires a schedule. This is a must regardless of whether it is an association golf day, your wedding, or a company seasonal party. You don't have to rigidly stick to the schedule, it is a guide for your event.
Start by listing everything that will take place during your event and do your best to estimate how long each item will take. Review the schedule with others to see if you have missed anything. Share the schedule with the banquet hall, your DJ or band leader, your photographer and videographer, and any other staff working for you. (A little secret - every professional event planner always does a schedule.)