there actually is a way to run a local script server, check this out:
https://discuss.eroscripts.com/t/how-to-host-scripts-locally-for-your-handy/102991
EDIT:
I would just use a mobile hotspot to or hook the travel router up to the hotel wifi. After looking into it it seems like the local script server doesn’t get along well with the 2.0 handy API? If someone else is using it without issue please chime in.