You get out of the dealer mode screen just like any of the others. There is an X or back-arrow, I can't remember which, on the top of the screen that closes it.
The driveUconnect website will not tell you about updates to the 2018 main UConnect system. Those are distributed over the air and cannot be downloaded by customers. It will tell you about updates to UConnect Theater system if there are any. The theater system, also known as the video routing module (VRM) is a different module with different software and version numbers. It lives under the passenger seat.
Can't tell you about the scheduling system of the JuiceBox but I know it has one. The ChargePoint scheduler is very simple. You tell it who your utility provider is and what rate plan you are on and it will set up the schedule for you. You can, of course override the schedule if you want to do something different. And it works, one hundred percent of the time.
And no, the PacHy cannot handle DC fast charging. Best it can do is a level 2 charger at 32 amps which will give you a full charge in two hours.
2018 Molten Silver Pacifica Hybrid Limited purchased Nov 30, 2017.