Stayed in Henderson the first weekend in May for the Crayfish Festival. We camped at Cajun Palms, very nice park, next trip we are going to try Pioneer or Poche RV park in Breaux Bridge.
My favorite places to eat in Lafayette Prejeans's, Blue Dog for supper, Central Market for Lunch and T Coon's for Breakfast.
In Henderson & Breaux Bridge Chicken on the Bayou, Poches, Café De Amis and for the best soul food try Creole Glenda's Kitchen
Lake Martin's bird sanctuary just south of Lafayette is a neat place to visit.
For night life go to La Possierres (MSP)
Just walking around in old downtown of Breaux Bridge and visiting with the locals is a treat.
Hope this helps