I travel a lot. Right now, I'm in NYC helping manage hurricane recovery and will be here in a Marriott hotel for 2 months before I go home. Sick of paying $17.95 for a movie from their on-demand system, I got the brilliant idea of buying an Apple TV and plugging it into the HDMI ports that the hotel makes available for external devices so they can play on the hotel room's television. Of course, I didn't realize until I was almost back to the hotel after picking it up at the Apple Store that I'll have major internet connection issues with the Apple TV in the hotel.
The reason...most hotels use a web-based interface for entering a username/password or room number to add to your bill when you connect to the Internet for the first time. They don't use normal WPA encryption keys/passwords, etc. In other words, the network is open, but you can't connect until you go through a Web-based login process. Works fine on a computer...but Apple TV, of course, has no ability to do web-based logins.
I figured I could get around this by sharing the Internet connection from my MacBook Pro which always on the road with me. I'm running Mountain Lion 10.8.2 on it.
Went into System Preferences > Sharing, and turned on Internet Sharing. Under "Share your connection from", I've specified WiFi as that's how I'm getting Internet connectivity to my laptop from the hotel's ISP. Here's where it gets weird.
Underneath in "To computers using", I have an option for FireWire, Bluetooth PAN, Ethernet, and iPhone USB. There's NO option for Wi-Fi. My Apple TV would be connecting to the laptop's Internet connection by WiFi, but for some reason, WiFi is not on this list, and as such, I also don't have the WiFi Options button below, so my laptop never shows up in the list of wireless networks on the Apple TV.
What am I doing wrong? Why do I not have WiFi as an option here?