What I'm doing here is writing, not the crenellations of a single pit, but the entire damn orchard.
Scribbled four pages of notes at breakfast... lists of what Sara already knows, and what she needs to know, and what Kellen and the spirits of the desert get from each other. Floor plans. Presentiments. Timelines.
...some of this stuff fits together with real-life Vegas scarily well.
It's easy to write fantasy about Vegas, because fantasy is the only thing that makes Vegas make sense.