My 17 year old son is considering travelling to Vietnam in August or September (when he turns 18), either with a friend or possibly alone. He has money saved up. Has anyone got any advice or experience to share on this? TBH I am terrified, but he will be an adult and all I can do is advise and help him prepare as best I can. He has taken long-train journeys alone in this country, but has never travelled abroad alone before 😯...