Hello Louisiana

Deb and I will be passing thru the lower half of Louisiana in late March. Never been there and would like recommendations on campgrounds and eateries. We try to stay out of the cities and enjoy the backwoods. Camping in Forest Service, COE's, state parks, and old deer hunting sites.
Looking online I see tours being offered for airboat rides and swamp tours. Sounds interesting. What will the weather be like that time of year?
Thanks for your comments.