Fort Wilderness at WDW is one that I know of.
Most RV parks and resorts I've been to do not allow fires at individual sites, but that doesn't always mean smoke-free environment because there may be fireplaces in the meeting rooms and group gathering areas, and people cook outside on their portable grills.
Most campgrounds have grills and fire pits where wood may be burned, at most campsites. That, for me, is one of the things that distinguish a campground from a RV park.
You can't always tell by the name. There are a lot of places billing themselves as "Campground" or "RV Campground" that do not permit camping activities like sleeping in a tent or building a fire, and there are places calling themselves "RV Park" that do have cabins and/or tent sites, and allow fires there even if not allowed at RV sites.
