Sandifer, who celebrated her 40th birthday on Aug. 29, the day the storm hit, said her husband and teenagers refused to accompany her because they did not want to hear such sad stories or see all the misery.
But she came because "this is history. This is something I really need to know."
As is the practice on every tour, Dupuy explained that $3 of the $35 ticket goes to one of several Katrina-related charities. He passed out a list so passengers could choose from projects benefiting programs for children, healthcare, animals, housing -- or, if they chose, specify another charity.
Dupuy also asked passengers to sign a petition to be sent to President Bush and other federal officials, urging that New Orleans be rebuilt. Everyone signed.
"We have to rebuild," said Trevor Colestock, 30, a teacher who came from Hollywood, Fla. "We rebuilt Western Europe after World War II, and we can't rebuild New Orleans, one of the great cities in America? What kind of a country is this?"