Captain,
We have spend lots of time in LA and know the places very well. In Lafayette you have the KOA at Scott, LA next door to Lafayette on I-10 and truck noise 24 hrs a day plus high cost. Good places to find Cajun food. Next east of Baton Rouge (Cajun name Red Stick) you will find Tickfaw State Park near Springfield I-12 ext 32. This place is deep in the swamp, free of all noise, has 50 amps and water, free Wi-Fi that works fast, fishing lake with dock and full of gators, level pads to park on, lots of trees but non are in the way, large dump station, great bathhouse, trails to walk on, and the bad part, hard to get into on weekends. The Cajun people love to get out on weekends so plan to go on week days or have a reservation. Park has 64 sites and all are nice. Check reviews here under Springfield, LA for more information.
More nice parks east of this park as well.