Well, good news for Riku! The Night Market doesn't have access to the network, so what's common knowledge among the Beacon bits may not be common knowledge to them!

Sure! Honestly, that sort of thing can be handwaved without Riku needing to pull extra favors. We wouldn't want anyone to be left out! It's worth noting that members of the Night Market won't enter the town, though. The furthest they'll venture from their submarines is the beach.