to use available light is not a random thing
Since I often use flash or additional light, there was some surprise in the (favorable) comments in the Facebook album when I mentioned this photo was shot without any flash. Not even fill-flash. Just the available light. But where I posed the bride, was a specific decision. It wasn’t just random.
Now, I often get the feeling that when someone boasts they only use available light, that it is meant to disguise that they don’t know how to use additional lighting. My thought here is that unless you find yourself in great light, or alternately position your subject so that the light works in your favor … you’re very likely to find that the available light just isn’t as flattering as it could be. Ultimately, this comes down to the point that using light – whether found (ambient) light, or light added by the photographer – is best as a conscious decision by the photographer.