@User You will need two TP-Links one for the hotel WiFi and one for the MiFi if you want automatic failover. The way the TP-Link works is that you connect your laptop to the TP-Link WiFi, open the device admin page and then as enter the MiFi or any other WiFi network information (SSID / password), once connected then you can plug the WAN/LAN port to the EdgeRouter. So if you only have one TP-Link, you will have to login to it and change which WiFi you are using. for $25 each, it will be best to have both. You could even to an SD-WAN and have both links running.