Kids are using the WiFi all night long and not sleeping... How can I temporarily turn off the WiFi at night using the Airport Extream or Airport Utility? I must keep the guest network up as I have a tenant in an apartment over my garage using that.

My kids are up all night streaming Netflix and using the WiFi on their iPads and Apple TV. The next day they don't want to get up and go to school. Is there a way I can set up a separate access point for just the kids in AirPort Extreme and then turn that one off when i go to bed? Or somehow turn off the main network when I go to bed, without having to reconfigure the entire router the next day, and then simply turn it back on the next morning? I have to keep the Guest Network up as I have a paying tenant living in an apartment over my garage that uses that network.

In the event it's not possible with the AirPort Extreme, any other suggestions would be appreciated.

Thanks in advance.