HO CHI MINH CITY -- Most tourists don't expect to be scolded by tour operators while vacationing abroad. But that's what they're in for when they join a tour led by Hiromi Tanaka of Sinh Cafe Tours in Vietnam.

"You Japanese tourists come to Vietnam not knowing anything about the culture, history or the wars of this country," she said on one of the bus tours from Ho Chi Minh City.

"City dwellers make up just 20 percent of Vietnam's population. What about Japan?" she asked. When no one answered, she said, "Today's Japanese don't even know anything about their own country."