a lot of free hotspots here in germany redirect on a webpage where a button has to be clicked to agree to the terms. Only afterwards free internet can be used. I think this is valid for some time or have to be clicked again after some time of inactivity. Last option would mean, create a ping script keeping the connection open.
The GL.inet Travel Routers can do bridged wlan. Is it possible to connect the travel router to a hotspot, have it click the agree-terms-button and activate bridge mode and do a ping script for keeping the connection open? Or automatically click the button by the router itself to get wlan again?