Fire tablet interface looks nice but is unusable for watching video box sets on Amazon for me due to these specific issues:
1. "For you" tab has a "continue" section which looks perfect, except it never shows me the next episode. It'll show me like 5 episodes back instead. I think maybe it doesn't sync with online viewing on other devices?
2. "Video" tab does not include any video history like on fire TV... No "watch next"
So I just have to launch the Prime Video app which is a shame, to waste those other sections.