(FILES) In this file photo taken on April 6, 2017, Thailand's King Vajiralongkorn pays his respects at the statue of King Rama I in Bangkok. - A king married four times with a penchant for piloting jets and lycra-clad bike rides; a shrewd tactician with a hefty fortune and the army's loyalty -- rare snippets from the closely-guarded life of Thailand's King Maha Vajiralongkorn who remains an enigma to his subjects. The 66-year-old heir will be crowned in a lavish royal ceremony this weekend, more than two years after the death of his beloved father King Bhumibol, widely revered in the kingdom as a figure of unity and man of the people. (Photo by Lillian SUWANRUMPHA / AFP)