I own a Chevy Volt and have
I own a Chevy Volt and have been keenly aware of EV charging etiquette issues for a long time. I just wanted to say that this is the best writeup I've ever seen on this subject! In particular, kudos for linking to the Charge Protocol Card PDF, which I've been using since I got my Volt a year and a half ago. I also have a card for my dashboard that encourages people to call me if they just have questions about the Volt or EVs in general.
The only thing I might add is that you need to make sure your car does not ALARM when unplugged (while locked). The original 2011 Chevy Volt did this, but you could get the dealer to change the setting. Starting with the 2012 Volt, that setting (alarm or don't alarm) is available on the console for the driver to change. I don't know about other EVs but I imagine that either have the same control or just don't alarm at all.
Again, great job. I've got a half dozen links that I tell new EV owners about, and this just joined them.