Zoom Meeting Connector in a truly disconnected server set-up?

We are exploring options for conducting video meetings in our trade show booth between terminals in our booth. We'd love to avoid the costly internet connection the venue will charge us, and are wondering if we set up a LAN, could Zoom Meeting Connector be an option for the video/audio between our terminals on the LAN.

Or, does Meeting Connector still need to have some internet connection even though the video/audio is streaming off a local server?

Thanks for any thoughts/insights!