Not judging, just curious. Why don’t you charge? Can’t where you park? (we had a Prius Prime a couple of years ago and loved it. Almost never used gas. Kids have it now. They plug it into an outlet in their garage and run the wire out to the driveway)
Yes, this is the reason. I have charged it a couple of times, but it’s not super convenient.
I actually considered that, but am pretty sure that I would still be liable even if it was the fault of the Park Assist. The irony would be sweet though 
However, one option might be to have the dealer demonstrate the parking with me as passenger. That might actually work…