So you can sideload, but without a mouse you can’t do anything other than look at the screen and scream 
@Jestep - you’re correct! I would have realized it once I sat down as with the Fire TV, its easy to connect a USB wireless keyboard/mouse however the FireTV stick presents a challenge without a free USB port. I could look if I have a USB splitter as I’m curious.
@7uo, interesting idea, I wonder…
Just got my Fire TV stick and used the Plex Tablo app for a couple of hours to test it out. It worked pretty well for me. Playback seemed even smoother than it does on my wired Roku 3, but that may have just been a coincidence. Still look forward to a dedicated app though.