That question was just asked of the FEMA director and he said "OH YES, they will have to go" and also said "They will have to leave NO" There is no infrastructure to support them, even in the dry areas. However, those not in harms way will be left up to the Mayor as to what to do with them. [that is NOT the people in the Dome]
They are showing people getting on buses now. I guess after what they have lived in for two days, they are glad to go.
SNIP: REPORT: 'FATS DOMINO - 91 - REFUSED TO LEAVE HIS HOME IN NEW ORLEANS, HIS CONDITION UNKNOWN