Search:

Depending on how good your hardware is, and the hotels internet, you could RDP to your home PC and play through that?
Then you would be using your home IP.

Or, VPN to your home PC and use its...

Yup, done a few searches myself and it seems like its a new Minecraft feature to try and combat spammers who keep attacking servers

If you follow the steps provided by Gandalf above, you should...

Nobody has provided me with any actual information about this as of yet.

Is this when you connect to the server?
Can you give me a screenshot of what it says/does when you try to join?

I think...