Louisiana is generally not very welcoming to Foreigners who are brown skinned.
The only exception is New Orleans.
Anyway that is the only city or area worth visiting.
The food is supposed to be great - but I avoid the cajun food. It has too many red peppers in it - not much taste. The SEAFOOD is very good. Try crabs and other sea food. Sausages are good too.
Tours of the swamps offer a different perspective of life and nature. I hope they preserve their natural resources like the coast-line and swamps. The night life in New Orleans is great, though it does not have an active club scene. Men and boys may want to visit some of the cabaret places near the French Market. Take a lot of money with you, the girls need it!
Katrina had destroyed most of N.O. but most of the good places are back - functioning. The aquarium is worth a visit.
The other areas of interest are Shreveport, Natchitoches, Lafayette and Lake Charles. You can rent a yatch to go deep-sea fishing south of New Orleans.
However, cities like Baton Rouge is most avoidable. Other parts of La. are mostly poor and backward. You may think the poor in India are lucky.