Avoid loud talking. I believe Ken does address this in the Webinar.
Also, don't come out singing like gangbusters in the first song, and save a lot of your good material for later. If you blow out your voice early in the performance, you will be in trouble.
Build to peaks, then let things subside vocally. Ups and downs. Highs and lows.
Do some lip trills to relax your cords and test your voice between songs and between sets, even between lines and phrases.
Remember, remember... Support!! This will help you to preserve your voice. If you don't support, you will commit the foul of putting your voice through unnecessary roughness.
Pace yourself, and save the best for last.
Good Luck, Adrian!
Glad it worked out! And you followed your escape plan after the monitors roasted!
This is a great "war story" of Rock and Roll!
You made it through!