Router Mode - WiFi input.

[JessH]

While that would be a very nice system feeding a HiFi, I don't see there would be any advantage over using a laptop to play.

The improvement in this case is that you can control your system from the attached screen while attached to the hotel wifi without the need to bridge the network somehow.  It's the simplest solution to your problem, which if I understand it right, is "how to control the headless player when the hotel network makes that hard".  Answer, add a screen so it isn't (strictly) headless.  It won't be the first time I've missed sn essential point though, so I might be barking up a red herring.

I don't think I made it clear enough that I was comparing playing on a regular media player on a laptop, to playing it on Moode on the described device. Were it a single box system, the speaker wouldn't be wonderful.

My current (relevant) situation at the hotel is Chromecast&GTV on the TV (controlled by the remote) usually with a speaker added. Laptop. Mobile, and I can bring a bluetooth speaker to play from the mobile.