When I'm down in the west country the local pub has a public Wi-Fi and a private one. I can see both on my laptop. There seems to be a Draytek router and box behind the bar and I know the local network is BT, possibly fibre.
There is a guide on the Draytek site but you need to register to access it.
http://www.draytek.co.uk/support/gui...s-guestnetwork
Here's another guide for the Draytek:
Guest Wi-Fi
I'm sure other capable routers support this.
__________________
History is much like an endless waltz: The three beats of war, peace and revolution continue on forever.
However history will change with my coronation - Mariemaia Khushrenada