For the most part there were plenty of moorings available during the whole trip. When we left cooper around 12:30-1 I noticed plenty still available on a Tuesday. Like I said m assumption is the reason the moorings were full at Great Harbour, JVD was mainly because of Foxy's BBQ buffet that night.
I'm in the big city of Eunice relatively close to Lafayette, LA.
Enjoy your trip with the family. Lots of great memories will be made! I can't wait until mine are old enough to take.