I’m afraid it was a pretty hokey tour. These are model guerillas hanging out in camp.
Notice the tour guide there. He told us he had worked for the Americans and how he had sold everything and taken his family as boat-people to escape but were returned three times so he stopped trying and settled down to make some money. I heard this same story from many others.
LP says the vast majority of boat people were the ethnic Chinese merchant class who both had resources to leave and the most to lose if they stayed. I kept forgetting to ask someone who might actually know.