How can I automate the Hotspot login process?
There are several Hotspot apps around which can automate this. An example would be WiFi Web Login. I didn't check this one (but used a similar some time ago): As soon as the Wifi comes in reach, your device should connect (provided you did it once manually). If the Hotspot app is running in background, it should pick up from there. You have to record the session once for this to work, it's like a macro-recorder.