Water get, and water got. Tidus sets down the jug and cup, just as the question's asked and his eyes light up.

"You know what--" he starts, but wait, he knows that Prompto knows what chocobos are! Nevermind that, and instead a more cheerier reply. "Yeah, they're great! Haven't seem them in months! You ride them?"

He settles down onto the bench with Prompto, bending a knee to face him better.