Whenever organising or inviting people or groups of people to an event or gathering for some purpose, the organiser (whether an individual or an organisation) has wide ranging responsibilitites in addition to management of the venue, entertainment or proceedings.
These will include the safety, health and rights of staff, volunteers, participants and the general public, as well as protection of property, and preservation of the environment. The organiser must also ensure that there is effective insurance cover such as public liability insurenace.
The Guide to Organising Public Events in the A.C.T. offers an overview of many of the issues that should be considered when organising a public event.