The final act before leaving the building should be to reenable remote access
and restore the voicemail on the helpdesk phone to normal. Make sure that
this appears on the master plan and the individual plans of those responsible.
It can be very easily forgotten after an exhausting weekend, but it is a very
visible, inconvenient, and embarrassing thing to forget, especially because it
can’t be fixed remotely if all remote access was turned off successfully