A:AnswerIt will connect to amazon music if you have an account, but you don't need it. Most of the time, I just connect it via bluetooth to my phone and play music from my phone on Pandora, Spotify, Apple Music, etc.
A:AnswerWhen I ask our Alexa to give me the weather or to set an alarm, sometimes an Alexa in another room will answer. I think you will probably not easily isolate the alarm to one bedside or another. Since you command the Alexa verbally, it really shouldn’t matter which one has set the alarm.