A:AnswerI don’t see why you can’t use it while riding, I normally wear a backpack and clip it on there but if you don’t have that maybe clip it onto your belt or a water bottle holder on the bike
A:AnswerDepends on how you plan to use it. I have a Flip 4 (current product is Flip 5) and a Clip 3. Both are good. If you want a speaker for a party, I'd go with the Flip 4. A little better sound with a little more punch. If you are active and just want good sound in a small form factor go with the Clip 3.
A:AnswerMine sounds really bad, lots of static. I can't say if the steam or humidity will damage the device but the background noise created by the shower might soften the static and make the speaker sound better.
A:AnswerYes. Here is a link on how to pair your amazon device to a bluethooth speaker. https://www.amazon.com/gp/help/customer/display.html?nodeId=202011820