The actual hunting environment consists of the following, necessary, elements
Huntsman
The organizer of the hunting day.
Respect is the order of the day here: consolidate your invitation, and do not cancel (if so, notify in time to be able to provide a possible replacement.
Be on time, and bring a gift for the host.
Also visit the Jachtmeester (secretary, maitre de battue) to pay the costs of the chapeau.
Fellow hunters
Usually a reception or breakfast is provided before the hunting day starts. This is also the opportunity to greet other hunters briefly.
Etiquette during hunting is complex and mainly stems from the Safe Handling of Weapons, see the Practical Preparation. Of course, you learn the most by experiencing a Hunting Day a few times as a visitor or driver before you actually go hunting.