It would be a good feature if we could set up a schedule for the availability of our guest network. This would prevent members of the public (non-customers) standing close to our premises outside of business hours specifically to use our guest wifi - having several 'youths' hanging around the building at night doesn't look!
There has been movement on this! Scheduled availability of a wireless network is currently in beta. You can contact support to request to join this beta and let us know if there are any problems. We haven't noticed any issues as of yet, but would value your feedback if you try it out.