Ultimately it is my hope that a documentary educates me about a topic I know little / nothing about, and makes me care about it. In this sense this documentary succeeds. I didn't know about Six Flags New Orleans, and I care that it was destroyed. Those poor people.
From a technical perspective, there was some ironing out that could have been done. The music is often too loud, and misplaced. The narrator should either narrate less or more, it comes out of nowhere, but some random images I would have liked to know more about them.
The film, when they finally show the post-hurricane park? It's underwhelming, and too many instances of hearing the director exclaim things like "Oh my God!" or "Holy Christ!" Not sure that added anything?
What I liked though, was a lot. It was done on a budget, but made good use of drones to capture footage. Good interviews with relevant people to the story. And again, the story made me feel something, so that's a win in my book.