Campfire's really just a meh juice. Everything about it is just ok. There's a little marshmallow in it, a lot of chocolate, and a sort of dry burnt taste that is vaguely graham cracker like.
Like all of Velvet Cloud's offerings, Campfire is Max VG. It's also a very dark juice. The combination of dark juice+thick liquid is a coil killer, and this is one of the worst I've had, as far as my coils go.
Flavor wise, the juice is weak. The bit of flavor that is there is fine, it's just weak. I've had my bottle for about 4 months, and I've tried it here and there throughout that time period, and while it's certainly gotten darker and more flavorful with aging, it's never really become good.
All and all, Campfire is a mediocre juice from a company with many much better (and more delicious) offerings.