So what does KWTD constitute?

The obvious one would be having completed the activity and understanding it. But what about stuff like having watched guides, where I know what to do(or should know) but haven't actually have hands on experience? I've completed Sundered, but have been kicked from every Vesper's group to date when I mention this. I almost feel like I should just lie my way through instead, but with Vesper's being actually somewhat mechanically challenging I wouldn't be able to not screw something up on my first try.