I have been pouring over the documentation for both Kindle and the Amazon Android app distribution docs. It looks like developing for Kindle devices is just like developing for other Android devices with the exception of device targeting (and some functions), in-app subscriptions, and in-app payments. The Kindle Fire SDK provides access to Kindle-specific APIs and device emulators on top of the regular Android Development Tools, correct? Thanks for your time!
I found the answer (in the docs, step 2) "Although the development process for creating a Kindle Fire app is similar to developing an Android app, there are important differences to keep in mind. See our user experience guidelines, detailed device specifications, and best practices to learn how to optimize your app for the Kindle Fire family"
https://developer.amazon.com/sdk/fire/getting-started.html Read, then re-read the manuals.