If you're in Lafayette and don't have the time to take the trips to the surrounding communities to enjoy things uniquely Cajun, you can always stay in town and still enjoy the culture and history of the Acadians.
LARC's Acadian Village will host their 36th annual Christmas fundraiser, Noel Acadien au Village, from December 1st to December 23rd. It's all to benefit persons with intellectual and developmental disabilities.
Some of these things listed I wasn't even aware you could do. A Cajun food tour? Sure, I know where all the spots I love to eat are, but this still sounds like a deliciously fun time for a local or a tourist.