We are beginning our first cross country trip in our Winnebago Vista Class A this weekend. I have a couple of rookie questions; 1) Do you leave the water heater turned on while you're driving? 2) When connected to "city water" do you leave the water pump turned on? I notice there is higher water psi with the pump on, but I thought the pump was used only for the onboard water supply. Thank you in advance for your replies.