What is the main conflict in Last Orders by Graham Swift?

Through alternating points of view, Last Orders tells the story of four British men on a journey to the seaside at Margate. The purpose of their trip is to fulfill the final wishes of Jack Dodds, to have his ashes scattered into the ocean. The complex relationships shared by all of the characters are slowly revealed in memories and flashbacks, all while the present action draws the novel to its inevitable conclusion.