There's no doubt in Chiron's mind that Dany will deliver on that particular point. He also has zero desire to think any more about the Regency (at least, not while sober) so he pursues no questions to the effect.

"Wine, of course. Usually far safer than water," he says with a sort of ease that means he's absolutely falling back into a comfortable conversation. "The Reach is a particularly fertile region, I presume?"