You must consider if you have adequate lighting in the event of a fire.
The size and type of your event, venue or site layout and the risk to relevant persons will determine the complexity of emergency lighting required. In all cases, where the event or venue is used in the hours of darkness, it will be necessary to provide sufficient primary illumination for general safe movement and, in particular, to illuminate all escape routes and exits.
Whatever the primary source of power, a back-up power supply will also be necessary in case of primary power failure. Any back-up power supply should be capable of operation in the event of a failure to the primary power supply.
You must also make sure that adequate emergency escape signage is provided.
On simple sites, a few signs indicating the alternative exits might be all that is required. At more complex events or venues, a series of signs directing people along the escape routes towards the final exit may be needed.
If the event is to be in the hours of darkness, or where there may be poor light conditions, signs and notices will need to be illuminated to ensure they are conspicuous and legible.