[Aya glances at the crowd that mingles, or fights. There's a few things he can say that are pertinent. Insignificant things, like where food comes from, can be discussed later.]

The most important thing to know is that politeness isn't the same here, as well as what they use for currency. [He looks back to the newcomer.] 'Please' and 'thank you' might get you murdered. [He lets that sit for a moment.] They take IOUs for currency, and you can barter for a better deal, or you can exchange an item for what you want, if it has enough value.