This whole discussion about campfires makes me cringe.
I haven't used a campfire for years (33), and sometimes I've camped for 100 nights in a year, one year at least 185. It's current campground ethic not to ("leave no trace") because wood foraging takes duff and small twigs (not to mention branches) away from animals that need it to survive (for nesting, cover from predators, etc), but it's also especially discouraged out West because of the risk of forest fire. Often, it is expressly forbidden. In some areas of the country (e.g. Appalachian Trail and many campgrounds) the trees are bare of branches below human reach and the floor of the forest has no debris whatever, as though it's been swept. These areas look completely sterile. Often, the animals have all left.
Not having a campfire is routine procedure for experienced campers. They use gas stoves. They generally do not use the new-fangled one-pot woodstoves that recharge iPhones, either; these also require duff and twiglets and there are many alternative ways of recharging electronic devices. First timers? Maybe that can be forgiven for the one-time experience of somemores, but they'd better be using wood purchased on site, with the fire started using a commercial packaged log. They have no business either bringing wood from elsewhere (which spreads disease) or using wood foraged on site. It does not belong to them: these are public campgrounds, for everyone and for animals.
Just sayin'....
Well, yes and no, and by that I mean different states have different rules. We just finished camping at a state park in Tennessee. The rules for camp fires is you cannot bring in wood but must purchase it at the park AND you can pick up and use twigs and any wood found on the ground. We use fat wood to start our campfires.