5) Observe the K.I.S.S. Rule
There is a tendency in the event industry to over-complicate things. In fact, it exists to some degree in every business. But there is a difference between elaborate and elegant, and often simplicity can be the most elegant choice. Some entertainment companies get so involved in showing off their capabilities that they lose sight of the goal. I have seen a formal wedding with so many flashing lights that it looked like a circus! Where complex systems are concerned, such as DMX lighting control or multiple-room sound systems, simplicity = reliability. All things being equal, choose the simplest option.