tim1970 wrote:
So, what happens to the DC only things when I am plugged in to shore power? Do they continue to run off of battery, and then the shore power keeps the battery charged? Or is there a converter that will convert AC to DC when I am plugged in?
Yes. Both.
Whenever "real" AC is present, either from the grid or from your generator the 12 V appliances still run on 12 V and the batteries are charged at the same time.
I think you are MUCH better off to get entertainment system parts that run directly from 12 V. I've done that and typically only have to run the gen twice a day for a few hours (unless it's really HOT out) which allows me to run the microwave and charges the batteries.
The more people you have involved the trickier the usage of 12 V power is to manage. With only me involved it's pretty easy.