I'm staying in a hotel for the week and the WiFi will only let 2 devices connect, my phone is Registered and my Nvidia shield TV is also registered, I am using Bluetooth hotspot from my phone to give my girlfriend internet aswel. I've got work for the next few days and she will be here by herself is there a way I can Bluetooth hotspot to my girlfriends phone from my Nvidia shield TV? I know this would work with custom firmware but I have stock firmware non-rooted and really don't want to install a custom firmware. Is this possible?
As far as I'm aware the Shield does not have this feature.
If the hotel staff has no control over the Wi-Fi system, then chances are there's not much you can do.
Probably too late now, but next time consider a travel router. That way the registered device will be the travel router, and you can then connect as many devices as you want to the travel router while the hotel will still think it's one device.