dream reunions

I had a dream about a birthday party for Chet, a friend of my parents who has a son and daughter the same age as me and my brother. He and his wife were lifelong friends of my parents from the time they were in Jaycees together as young adults. The party was at a large house like my family's home or his home. There were several people who I realized in the dream were already gone from this life like my parents and my maternal grandmother.  There were also guests who were neighbors and family of Chet who I had not met before. At some point during the dream I realized it was actually a going-away party being thrown for him and attended by both the living and the deceased.