Amazon Prime Video now does what Netflix won't: offline playback | The Verge
Amazon is now offering offline playback for their Android and iOS apps, so now you can download those shows you want to stream while you're on the McDonald's or Starbucks WiFi, and then watch them back at the trailer, with no hit to your mobile data plan!
We plan to rent an AT&T unlimited plan on ebay for our Escape travels, but this option is very nice for those times that we won't want to rely on a data plan.