It's like being a free Narnian, and being king, meant that Rilian was *of course* all right, as soon as he hit the surface...no consequences of many years' imprisonment and brain-washing.
I bet Rilian was both afraid of the dark *and* claustrophobic as hell. I'm also betting he didn't like snakes much. Or green.
On the other hand, he'd be sharply aware of the power of sexual persuasion, of subtle influences and the effects of personal charisma, and how hard it can be to resist a believable lie when it's repeated ad nauseum. One hell of a politician...*eyes you*