Ok...first of all....do not quit trying to hook up Amazon fire tv to the Princess tv
Why ? Because all you need to do is Request an engineer to assist in hooking it up!!
If you are sailing on the Grand Princess, you can do it yourself...but on Ruby, Crown, and Emerald...you will need the engineer to help...I have yet to meet an engineer who said no way ...they love to jailbreak as much as we do
Stop whimpering and call the frontdesk!!