They say that nothing in life is in vain, but Google would be different in that it offers selected YouTube TV subscribers a free subscription to Showtime from now through September 5th. The subscription usually costs $ 10.99 per month. If you receive this limited time offer, you can try the service for free.
It's not very clear who has access to this free Showtime summer, as YouTube TV simply says to "longtime friends" on offer. However, as someone who has paid for YouTube TV since last year, I have not seen the offer on my account. It should pop up as soon as you download tv.youtube.com or the YouTube TV app. However, if you want to make sure you do not miss it, you can also check the Settings menu. [1
The best part of the offer (other than Free Showtime) is that YouTube TV does not charge you automatically at the end of your free summer. If you choose to pay Showtime in the future, you have this option, but you do not have to cancel early or tick boxes to avoid a surprise fee in September.