I have to agree with this. Tried taking the Chromecast with me on holiday. At a base level, the Chromecast requires constant connection to an external Wi-Fi router. So even if you want to stream content that you have LOCALLY on your device, you can't, not without a lot of messing around.

Why the Chromecast has the ability to run it's own Wi-Fi network to only connect to another is a design decision I don't understand. The other parts of it are great, but it's a shame that for such a small and portable device, it's such a pain in the ass to use away from home.