A:AnswerYes, but with some complication. Google "sideloading Google Play Store to Amazon Kindle Fire." Once you have access to that you could load up the Chromecase App.
A:AnswerThere's no child proof case and I believe that the reason being that the case would probably cost as much as the tablet.
I have bought these for my kids due to the fact that if they break them, it wouldn't hurt as much due to the price.
I would recommend getting a tempered glass screen protector to protect it from scratching from all the finger swiping they do.
A:AnswerMost tablets print best when they are wirelessly connected to your home network based wireless printer or a network that allows printing and has them available, most libraries do. It would stand to reason that were your older Kindle wirelessly connected to a given network it too will print if printing is available.
Hope this helps.