How to set up a local area network and how to set up a local area network server for hotel optical fiber access.

It's a little troublesome to talk too much, so I'll simply say that optical fiber construction is not much different from other network cables. Be careful, don't bend anything, then plug in the right interface, and don't plug in the switch or router on the pretext of slow speed. Then use a computer or server as a proxy server, which can be software or hardware, so as to control other computers to surf the Internet. If there is a switch, you can set a vlan, that is, a virtual local area network, to dynamically identify the mac address, so that the mac addresses of all your computers are identified, and the newly inserted computers of customers will not be used then.

I think what you said upstairs makes sense. If you are not good at it, please hire a network engineer because the solution depends on your existing network environment.