What makes delight so powerful is that it cannot be defined from the server's point of view. Focusing on delight will force you to see everything that happens in the restaurant through your guests' eyes and that will keep you more in touch with their dining experience. Creating guest delight is great fun and the best servers make a game out of it. Notice something personal and positive about your guests. Reinforce the guest's decisions.
People are vulnerable whenever they make a choice - nobody likes to make a mistake.
A few positive comments from you when guests make a decision will reassure them that they are making wise choices. If they feel good about their decisions, they are more likely to order additional items and try new things. This can help diners have a better time in the restaurant and feel better about your service. Bring the full one before taking the empty one. Let's say a party needs more rolls.