P4 parking area off limits please!

We have been requested to please NOT USE P4 PARKING AREA (next to our start area) 

P4 parking is off limits to parkrun participants even if boom is open. Do not park in P4. DO NOT ARGUE WITH PARKING SECURITY! THEY ARE JUST DOING THEIR JOBS.
This area is reserved for paying events, and we cannot enforce entry controls over who is entering P4 for whatever reason and who is not.
P11, P12 and P13 are the designated parking areas.
Legal courteous parking on Bay Road and Beach Road are alternatives. Take the bus, cycle, walk or share a car to reduce parking.
We use the Urban Park and stadium precinct facilities at no charge.
This is a reasonable request and compliance is expected.