Anne and Bob,
You ask some interesting questions that I have only a few answers for.
You are right, I was wrong concerning running the generator. If you are plugged into 110V shore power, then you are all set to jumper to the front underhood chassis battery. I assumed you were not hooked up to shore power.
It is a mystery why the chassis battery drains so quickly. I do wonder if the newer 2009-2013 Ford chassis has more stand-by features like for example the built-in dash board GPS, wireless key fobs, alarm systems and such, features that have a small current draw even when everything is turned off.
PC owners do find their chassis door step lights on when they thought they were off. Just be sure those little lights at the steps of the two front Ford doors are off when you leave. If they are on, turn them off using the headlight dash board dimmer switch.
I think the entry door step does not draw power either way, but not 100% sure.
Hopefully someone else will chime in and provide better information than I have here.