Bruce,
Check out this site above. The last week of April in Chicot States Park, 40 miles north of Lafayette, there is the Balfa music camp, which is part of the Louisiana Folk Roots festival. There is also another camp called Augusta (I'm not sure exactly where it is). Good luck with your search.
Dunno where Ga is. But check out Tracy Schwartz. He is also not cajun/LA and gives workshops, I read somewhere some time ago. Maybe in your heighbourhood. And he is/was a very good player, one of my heros