New Orleans LA

Can't make a recommendation as we've never stayed in that area. Try searching for parks along the I-12 corridor, north of the city, between Slidell, Hammond, and Red Stick.

French Quarter RV Resort is nice, but also in the city. I know you mentioned staying further out. Walking distance to French Quarter. Also pricey, but it's right there.

I stayed at a KOA in the western part of the city, they will take you to the end of the streetcar line to go down town. also stayed at the KOA in slidel, nice but bring mosquito repellant along.
bumpy

Howdy!

We have stayed at Pontchartrain Landing. It a nice RV park outside of the city but still a short drive. It is also a Pass Port America discount park. We stayed for a week on PPA discount. They also have a nice bar and restaurant on the property. They also have large pull throughs.

Pontchartrain Landing

“Happy Trails”
Chiefneon

We stayed at the KOA West of town. It was fine. We went to see New Orleans not the campground.

We stay at Bayou Signette State Park which is on the SW edge of the metro area. Rural setting, sites have a lot of space between them, water and electric connections, very good Wifi at every site. Very clean well maintained shower houses. The park is very well cared for and safe. From BSSP you're about a 10 minute drive into the French Quarter. It's easy to get to from I-10 by taking 310 to US 90. I don't remember the price. Something like $20/night. A real bargain for camping fee that close to a major city.
We have stayed at Fairview Riverside State Park in Madisonville on the north side of Lake Pontchartrain. A nice state park but the sites are a lot closer together than at BSSP. Fountainbleu SP is also on the north side in Mandeville. We stayed there once until we started staying at BSSP.
We also stayed at KOA West. Sites are very close together and tight. Others may like it but it's not the kind we prefer, particularly with such a nice park like BSSP available.
We stayed 1 time in another park in NOLA but I can't recall the name. Way too much city noise and traffic.
There's a couple of campgrounds next to each other in Slidel on 190 east of I-10 which aren't too bad. If it's been raining we found both of them to stand water in places.

We stay at Reunion Lake RV Resort off of I-12, exit 47 in Ponchatoula/Robert. It's about 55 miles to the French Quarter - down I-12 to Covington and then across Lake Pontchatrain on the causeway. This campground is awesome. Super clean, quiet and all concrete sites and roads. Not the cheapest, but worth the extra costs.

We have reservations for Early July at French Quarter RV Resort. Walking distance to Bourbon ST. I've been told to uber back to the campground because it can be dicey walking back. Either way it seems the best choice for checking out the French Quarter. And if you drive in parking can be as much as $30-$40!!!!

Stayed at the KOA on the west side and its ok. The amenities are dated but you are in one of the poorest states in the union visiting a very run down city. Evrything at the KOA was clean and in working order though.

X2 for Bayou Signette State Park. Stayed there two years ago and enjoyed it.