This article explains how to set up an Alexa device in a hotel room.
TRAVEL WITH AMAZON ALEXA ECHO DOT!!
Setting up an Alexa device while traveling is a lot like setting up a brand new Alexa device. Once you’ve checked in at your destination, you’ll need to give your device the name and password for your local Wi-Fi network, set your location and time zone, and there are a few security-related tweaks you might want to consider.
Here's how to get your Alexa device working when you're traveling:
Connect your Alexa device to the WiFi connection you are on.