New here...campgrounds that do not allow campfires

Most public facilities (state parks, national parks and forests, Army Corp of Engineers, etc) allow fires except in drought situations.

Lots of RV parks do not have fire pits or allow fires. Especially the ones that cater specifically to big rigs. I think your best approach is to narrow down where you want to go, then use http://rvparkreviews.com/ to find the nearest privately owned RV parks and either check their web sites or make some phone calls.