Its really only a convenience exactly as you said. None of the smartshots require data, where "data" is an internet connection to receive satellite maps in the solo app. They are only a visual aid and you'll still see the blank map, but the map is not needed anyway as you can frame everything without it. Even if you go into map view without data, it will still show 1) Solos Home/Takeoff location, 2) Solos current location, 3) Solos direction/heading. All plenty useful information.
Using the method for orbit that I mentioned above is more accurate than using the satellite map anyway since most of the satellite imagery isn't from 90degrees straight above what you are trying to orbit, so it's off most of the time. If you use the quads actual position when it is directly above the subject to set the orbit point it will be perfect every time. Also, that method works for things that aren't on the map. Like you or your car on the beach or some house that was built since the last satellite imagery was available.
The follow type smart shots require the device being followed to have GPS, but that is not the same as data/internet connection, which again isn't needed.
