“You can use the field” is a generous offer, but it leaves several different events possible. A small afternoon picnic, an evening gathering with amplified sound and a weekend market place different demands on the same site. Put the agreed use into a short record before inviting people.
Draw the boundary of the permission
Identify who has authority to grant access and which area is included. A rough site sketch can distinguish the gathering space from a private driveway, locked outbuilding or neighbouring plot. Record the date, arrival time for organisers, public opening hours and time by which equipment must leave.
Describe the proposed activities plainly. List any structures, cooking, vehicles, sound equipment or ground fixings you intend to use. Do not treat permission for a gathering as automatic permission for each of these additions. Local permits, insurance conditions and safety requirements may apply separately; check with the responsible local authority and insurer for the actual event.
Make the handback observable
An illustrative agreement might say that organisers will remove hired furniture that evening, take collected waste away through the agreed route and meet the owner the following morning to review the space. That is clearer than “leave everything tidy,” which can mean different things to different people.
- Name the organiser who can approve changes.
- Agree who controls keys and who may enter restricted areas.
- Record existing damage with the owner’s agreement.
- Set a contact route for weather changes or an early closure.
Send the final version to the owner and the people managing the event. If an extra vendor or a vehicle delivery is added later, check whether it fits the permission already given. Keep a dated amendment rather than relying on a conversation that only one volunteer heard.
The permission record should make the relationship easier, not turn a friendly offer into an adversarial negotiation. Both sides should be able to answer the same practical question: what will happen here, and who will put it right afterwards?

