The only way I could watch the latest episodes of Game of Thrones in any respectable manner while I’m traveling is to pirate the episodes and watch them when they are done downloading. Watching Game of Thrones on hotel wifi over the HBO Go app was a bit like watching late 1990s Web video. It was blocky, pixelated and prone to stopping randomly.
The best is when HBO Go drops down to an audio-only stream. Yes, instead of providing offline caching or selling digital episodes via iTunes or Amazon during the season, HBO believes showing a blank screen with audio is a good solution.
HBO Go is not a to go app.