Weirdly enough I'm currently going through my first maintenance request with Tesla and despite me living 15 min from the service center they scheduled a mobile service appointment. I was totally expecting them to ask me to bring it in.
The app does a pretty poor job of not allowing you to specify issues outside of the standard flow. I could have called a service center but between how hard it was to source a 12v battery independently(I know it's a deep-cycle battery but still!) and high mileage I just don't think it's a car for us any more.