Yea, I'm sorry. I was wrong about the LTE. It's not free. But conversely it's not needed to use the car. Right now the premium subscription is needed for the media streaming/Hulu/NetFlix,etc. But according to Tesla's web site you can also get the some streaming media features using your wi-fi hot spot. From the quote below it appears you don't get streaming music with Premium Connectivity, which really doesn't matter because you can stream anything through your phone.If you took delivery before July 1 2018, then the LTE service is free for the lifetime that I own the car. It's no longer the case. 1 year free then subscription. But as cyaopec explained, it doesn't have a detrimental effect on the functionality of the car. The wi-fi is much more important IMO.
Tesla plays with their pricing and offerings depending on how the quarter is shaping up which most are familiar with the "free" supercharging that gets thrown around as needed. This was one of those "offerings". One of the reasons (admittedly petty) why I'm reluctant to upgrade to a Model YP.
Can I get Premium Connectivity features by using a mobile hotspot?
Some features that are available to Standard Connectivity owners over Wi-Fi such as video streaming, Caraoke and the internet browser may also be accessed over mobile hotspots, subject to fees and restrictions of your mobile carrier.