I am connected to the hotel wifi network, but the login screen does not appear.

Just a heads up from the other side. I worked tier 2, now working tier 3, support for hotel wifi networks. The most common issues I encounter:

1.) Navigating to HTTPS sites. THIS IS THE MAIN KILLER. HTTPS sites are secure, and their are still plenty of network devices that do not redirect this properly. Navigate to a HTTP site such as: captive.apple.com, www.CNN.com, www.purple.com; this will trigger the redirect to the portal page.

2.) DO NOT USE APPS. its hard to believe, but Facebook, Twitter, Snapchat.....these all use HTTPS sites. Going to the app, and expecting to be redirected just wont work. Use your browser, and follow the above suggestion.

3.) Turn off your data!!! Most devices, regardless of vendor, will eventually experience issues maintaining multiple connections. You can mitigate this by remembering to only use 1 connection. If it is wifi, shut off cellular data.

4.) Work devices. Makes sure you do not have a static IP address set on the device. If you do not know, ask your work IT guys. You might get lucky here, and their; but do not count on it everywhere. Someday your 192.168.x.x device will meet my 10.10.x.x network, and it will waste ALOT of your time.