Seems you mentioned two problems.

  1. You cannot connect Beryl to the hotel network.
    Can I ask if you connected the router to the wifi but cannot access the captive portal or you cannot connect the router to hotel wifi at all?

  2. You connected other devies to the hotel wifi directly. So why do you want to access 192.168.8.1 then? Maybe the hotel also use 192.168.8.1 for some reason.

Pls clarify and we can check what to do next.