Another option you could explore is downloading tv. Netflix with some programming and Amazon prime as well allow limited amounts of downloading of their programs at several different quality levels.
Data saver is grainy or blocked. good is around 480p, better is about like 720p, and the highest is supposed to be 1080.
We usually binge watch a show this way and will record it at a restaurant during lunch or dinner, or stop for a few minutes at a library or whatever and download 10 episodes to watch later. We have kept an old otherwise retired, tablet just for this purpose.