Day 6: System Failure.
Technology is a wonderful thing. The staff knows how helpful it can be, but every once in a while it decides to malfunction. Computers will malfunction and systems will fail, at the worst time. When all of the computers are down is precisely the moment guest burst through the doors in throngs, each with an emergency that needs to be handled right away.
The most important things to do is breathe, call tech support, and apologize. Remember I is never your fault, even the guest will make it seem that it is. The system will return to normal, but the guests never will. In every situation where the staff has no control, the guest will place the entire blame on the staff.
Hope that this aids your survival.
Good luck. Godspeed.