First, parents need to be constantly vigilant and closely monitor those who have just come to the party. Seeing the new arrivals, the parents should definitely go in person to greet guests and treat those who came before in a similar fashion.
Second, you should introduce guests to each other because it sometimes helps in creating more awareness and goodwill about your family. Not every mom and dad knows the names of their children’s friends by heart or other people's relatives. In this case, following the rules of etiquette, the parents themselves should meet with the guests to introduce themselves.
Third, the parents along with you, meeting with guests must provide information about where the groom is and what should be the time of the meal. This is particularly important because it might cause confusion among people that can lead to unpleasant feelings.