Not having the benefit of this website when we visited New Orleans, we stayed at what I believe was the Mardi Gras campground. First campground I've ever been to with bars on the windows,
bullet proof glass at the desk
and concertina wire on the fence top surrounding the place.
Oh and the local winos with their paper bags hanging out in front of the mini mart. And the trash truck maintenance shop next door that ran 24/7. We were going to spend a week there. One night was enough.
That experience has kept us from even considering Mardis Gras as somewhere we want to be. Just too urban and chaotic and that's what we retired from. Definitely stay outside the city.