Harness is not a requirement & CAMS day license is as simple as filling out your details + handing over $35. The cars need to be in a roadworthy condition, as per the regs at the motorplex. Seatbelts/brakes/steering all working as it should, no bald tyres, no loose objects in the car. Everyone on here should atleast have the capability to get their cars upto scratch if not already so Not sure if No Limits night rules will apply, but if they do you will also have to mount a fire extinguisher in the cabin where it accessable to the driver & throw a blue triangle sticker on the car to indicate where the battery is. Blue sticker can be made from electrical tape & extinguisher can be purchased from anywhere, Superdump/Autopro/Go Gear etc etc