Either on captive portal networks or on networks where you must provide a username and password prior to connecting? I live on a college campus and have limited network access and control options, so if these aren't a possibility then I doubt I will be able to use my controller and that will be disappointing.
I'm going to be at a hotel with a captive network this weekend, so I'll find out.
Thanks for the info @Meatcircus. Hopefully they can make it work in the future.
I'm sitting in a Holiday Inn Express room right now with a captive internet connection and no dice. I'm able to use the internet no problem. In fact, I'll be playing MtG Arena tonight instead of anything on Stadia. Last night I attempted to run stadia on my phone after connecting it to the wifi. The phone connected and the app would boot up, but the controller itself wouldn't connect to the internet. Next I tried playing on my laptop. The laptop connected to the wifi just fine, and I plugged the Stadia controller into the laptop which also worked fine. But Destiny got hung up on the "Checking Connection" screen. I changed my internet access from Private to Public, and I managed to get to Destiny's loading screen, and sat there for 10 minutes before I quit. So I tried to connect to with a CAT 5 cable. The laptop is connected just fine. But both games I tried (Destiny and Samurai Showdown) hangs up at the "checking connection" screen. I'm a little bit bummed that I have to play Magic Arena instead.