There are many party ideas for an 80th birthday, but it would be advisable to start the party preparations at least two months in advance. The reason behind taking so much efforts is that we would not like to face any problems at the eleventh hour.
Dispatching invitations early is important so that people can plan their other work accordingly. This important task of sending the invitations should be done by the young members as they are more energetic and enthusiastic.
Try to invite the people whom you do not get along well, as this mega celebration may help to break the ice between you and them by forgetting old differences. The guest list should ideally include family members, close friends, distant relatives, colleagues, etc.
Hopefully, these ideas will make your job easy. A little effort from your side can make this day unforgettable for the birthday person.