Not here to come down on you like a bag of hammers. You have asked for advice in a publicly accessible forum, and here is some genuine advice for you...
Donzac: Capping Numbers: To limit the numbers players will have to pre-register and each player will only be able to bring a maximum of four spectators
Capping spectators is really odd, and extremely difficult to do if you are in a non-fenced environment like a publicly accessible sports field. If one person arrives with their 4 grandparents and another elderly family friend, you would turn one of them away? I wouldn't even get into that situation if I were you.
Offering tickets to a gated event is of course a different story.
Parking: There is ample safe parking on the side of the road for the limited numbers attending. It's a quiet, flat, straight road and even in the height of summer maybe ten cars an hour travel along it.
Is it actual carparking? Or just grass verges. There is plenty of precedent for issues here - including here in Hawkes Bay where a local event attracted the ire of the police and the council for doing just this - having an event that caused attendees to park on the side of a road which caused problems.
Toilets: the event only runs for an hour. If someone needs to go to the toilet there are plenty of bushes and the public toilets are only 400 metres away
Whose bushes have you just advocated people to urinate/defecate in whilst attending your event? Private property where people have given their consent and people can't be seen from publicly accessible areas? Police + council will definitely have something to say about this. You just can't hold a commercial event, and go on the internet and direct people to urinate in public.
Are the public toilets going to be available for your event, or do council bylaws dictate you provide port-a-loos, rather than unplanned load on public toilets?
First aid: As I have already said I'm doing a first aid course next week and will have a first aid kit. In the case of a major injury, emergency services will be contacted and I will take it from there.
You are running the event, are you going to stop the event if somebody has a minor sprain, and you need to help them ice it and bandage it? Or leave them to it?
To plan a sporting event, relying on a first aid certificate that you haven't even sat yet, seems a bit irresponsible.
People get injured at sports events, you need decent first aid support. The organiser having a first aid kit and a 1 week old certificate just doesn't cut it really.
Crowd control: There will be a designated area for spectators that will be policed my family.
Also,the people who will be attracted to play this game will be very intelligent. This is important.
You have no control over this. I can't believe you think you do.
When they see the game they will instantly recognise the time, and cost, that it takes to setup and create a game This will create goodwill.
No it won't.
Might as well say that people will recognise the far greater time & cost that it took to set up the internet, and that that will create goodwill on the internet.
It just doesn't.
Your ability to run a safe and well planned event, and give people their moneys worth will. But investing your time and your money doesn't mean jack squat to most people, even the nice ones.
They will also know it is a new sport and I beleive they will accept minor glitches just as sportsman do in major sports that have been around for a hundred years.
I would bet that people paying money to attend a sporting event will expect it to be well run. Latitude in acceptance of lack of organisation skills is generally reserved for enthusiasts creating a community around a sport that is not a commercial endeavour for someone else.
Legal requirements: As long as I run the games in a safe manner, make sure there is no danger to the general public, spectators, I'm not worried in the slightest about the law.
You should be. Large fines and unforgiving councils see people done like chicken dinners for blatantly ignoring or even not discovering local bylaws.
If you visit the adjacent seaside community you will see far more dangerous illegal activities taking place than my game. Kids zooming along the public road on quads, beach vehicles so unroadworthy that I've seen a wheel drop off, one of them, as it was being driven along.
Kids riding non-compliant quad bikes near the beach in a different area of town is zero (really: zero) excuse for you to have any lapse in judgement about what you are doing.
Anyway, I very much appreciate your input. It has made the game safer for both the players and the general public I know you will still be exasperated by my contempt for the law,
Not exasperated. Not surprised.
You came, you asked, you got answers, life goes on. You choose what you do. Incredible and indelible record here of you saying you have contempt for the law and are not worried about it in the slightest, and that people should urinate in public at your event...
I weighed up the risks for everyone and decided, they are so tiny,
You don't think people get injured at sports events? Or that uncle joe picking his nephew up at the end, and drives onto the sports ground, ripping it up with the new tyres on his Terrano causing $2,000 worth of damage, is something that the council or sports park owner won't pursue?
So much more, but appears you have made up your mind.
it is worth introducing the game to the world.
I have several good ideas about methods for introducing new events to people. I have assisted in this before. It all started with permission, safety, reviewed plans, and plenty of time...