When putting on an exhibition it is vital your delegates know what to expect, photographs show them how busy it is likely to be, what type of businesses are there, who they will have the opportunity to speak to and will ultimately sway their decision as whether to book to come along or not. 

Photographs are a key into what an event or exhibition is going to be like, you can use the photographs in many different ways, many use them to promote the next one and also ask for a few after each day to post out on social media.