Some dealers are a bit hit and miss with it. I got mine and it was all setup ahead of getting the car, but some have to chase and are left to install themselves and some just didn't bother and went to Amazon
It doesn't use a lot of data, I use Tune In Radio and have done 3 satnav updates so far an its not even used 5GB of the 100GB since Sept.
I find the built in Spotify far too buggy and it stops all the time, so I just use my Android Auto for that. Tune in works well though.