-Change oil -Remove as many things from inside your Z before the event -Tighten down your battery to the point where it won't move even if you pull hard on it. -Check tires -Check for play on wheel bearings, T-rods,ball joints....etc. -Alignment -Start with shock settings 1 front and 5 rear -Mark tires and Start with tire pressure 40 all around. Adjust as required. (For reference I run 35 front and 25 rear) -Lawn chair -Water (coolers better) -Pen Pad to write notes -Sunscreen