Can anyone tell me if I'm able to upload pre-planned FlightHub 2 waypoints, flight routes, maps etc when I'm offline/away from internet connection. For example I turn on the drone in a remote location without internet and maybe I could upload that information via a USB onto the controller? Or prehaps something else? Many thanks

Yes, waypoint missions can be downloaded as KMZ files and manually copied to your drone and loaded in Pilot 2 app.