Or we could read the signage. There's gotta be some sign for the library or town hall, right? It would require a little more work on their parts, but it was something. And worst-case scenario, maybe at a library they could ask for a book on the town history.

No, "they" as in Heartless. Why do they have munny? If their bodies went elsewhere, why did Heartless have it? Nobodies made better sense, though they had it, too. Hmm, they wouldn't, but honestly I'd rather not cheat a memory out of paying for food we can't really eat. Not only was Riku not exactly okay with it, he also found it not worth the potential risk.

If Kingdom Hearts was collecting memories, "collective" could be every memory of that world at that time.

Riku atypically acted without so much as a thought. On sheer impulse he quickly vaulted over the wall, making a dash for the tomcat with the beta in its mouth. There's not much time!