I don't think we should be committing to this at this early stage.
First we need to sort out our actual event plan and site layout, confirm the Event Management Team and other key Facilitator and Team Leads such as Site Safety, Health & Safety etc - and to do that we first need to finalise the Organisation structure itself.
These outstanding decisons/plans and input from people recruited will impact the scope of any Safety Plan and determine what external input is required.
I think we need to let the Volunteer Team have an opportunity to recruit volunteers to fill the vacant roles and see what skill sets they bring.
I don't think it is time critical to sign up with AAP at the moment and if they are needed.we can call upon their expertise at a later stage. We can have a contingency in the Budget for H&S consultancy but we shouldn't be committing to a contract just yet.