Topic 3: Security.
You need to balance accessibility with security. If the network is fixed and installed, security can be tighter to stop unwanted users and block rogue equipment. However, if the network is mobile and changeable, quick accessibility is important, so security should be looser. However, one potential Achilles heel is Wi-Fi. The sound engineers and musicians might need it to control the audio equipment, but the airwaves can become congested when the audience arrives. One tip is to hide the Wi-Fi SSID name. Then nobody can find it unless you tell them! One more thing: will your network switch protect you from the classic rookie mistake? Plug both ends of the same cable into one switch. Oops. Yes, halt a network with a €1 cable! Make sure your switch has loop protection: you will be thankful for it on untold occasions.