The generator needs to be running in order to have the roof air on. You can have the refrigerator on propane while driving, but needs to be shut off when refueling. If you are not driving for several hours, then there really is no need to have the refrigerator on if you cool it down before leaving. I am not sure about the inverter and how many outlets can be used. When not plugged in to outside source, plug something in an outlet and that would tell you that. Of course make sure your battery disconnect switch is on.