I'd call first.

Brown shrimp season is open now. Which is good for fresh as in never frozen.

In Grand Isle Fresh Seafood - Grand Isle

In Slidell Slidell Seafood Market & Restaurant

In Baton Rouge for crawfish Live Louisiana Seafood Sales | Tony's Seafood & Deli in Baton Rouge

I have found the best prices for crawfish at https://www.facebook.com/Michaels-Se...0782304266633/ in Hammond La.

IMO It's Hard to buy crawfish at the dock. Unless you know someone.