We had a rotor antenna at home, so I didn't get my first cable experience until I moved to my first apartment in 1979. The complex had its own cable system and the best selection it had was The Movie Channel which I thought was the best thing ever invented.
I lived in that complex for three years: two years in a one bedroom garden apartment and the last year in a two bedroom garden (the second bedroom was used for my office and it was SO nice to get my desk out of the living room), and the complex always had The Movie Channel which, along with TBS, were my two favorite cable channels.
I didn't get HBO until I moved to the house I'm now living in in 1982 and subscribed to (then) Cablevision (now Time-Warner).