If anyone is looking to use an Amazon tablet, I would highly recommend using the Fire Toolbox, downloadable from XDA-Developers.
Its free to use, frequently upgraded, and allows you to remove the amazon force loaded bits, including their advertising.
I stripped back an old 7" Fire and it ran so much nicer, when I did the same to family member's fires, they all saw the usability instantly.
Since then, I've upgraded to the 8" (due to my work, the rear speaker wasn't suitable), and not looked back (after using the toolbox on it).