Run Sandringham 24

Has anyone done this event before? I've booked in today for a solo effort. Finding the website not too useful for certain info though.

I'd obviously like to pitch up a gazebo and have wife and children provide some support, and some kind colleagues are going to help with the night shift. I know when I've done bike events similar in the last there's no issues, but here it seems greed has got to them and they want a fair amount of money for support folks? 

Has anyone done it and how did you set up?