Whether you are marketing from your own purchased booth space, you are a presenter/panelist, or the expo is YOUR organization or company's premier annual event/fundraiser, you should be capturing AMAZING video content AT THE EXPO or event for future marketing purposes.
First...create a plan of what content to capture and how you are going to USE that content. Second, determine how much video content you want (for example, if you want 3-6 months of social sharing content to promote your next expo, your service, or your business, you'll need a lot of pics and video). Third, it might be wise to select some video/interview pros adept at doing this kind of thing and simply make their services an integral part of your marketing budget.
Ideas:
For Expo Organizers & Event Coordinators - your event ROCKS, right? The best way to bottle-up the excitement and ENERGY of your expo/event and market future events to a new audience is via video (https://vimeo.com/310592178) ...capture B-Roll at the event, take pics of smiling attendees, allow booth owners to explain why they attend YOUR expo every year and how important attending is to THEIR business(s)
Capture your speaking presentation/lecture on video (2-camera shoot) and collect testimonials IMMEDIATELY following your presentation...professionally edit pre-selected parts of your lecture into bite-sized social sharing videos...ditto with the testimonials...not only can you edit content for social sharing, but if you have a brick & mortar business, you can set up a dedicated monitor to play the content on a loop...along with 'WHY', 'HOW TO' or 'SAFETY' videos (for example) from you or others on staff at your company
Are you a member of a 'roundtable of experts' discussion...PROFESSIONALLY VIDEOTAPE THAT!
If you have secured a booth at an expo and you're pretty good at what you do/promote, then you likely generate a 'buzz' at your booth throughout the day - GET THAT 'BUZZ' ON VIDEO and share it on social media to promote you, your business/service
Educate, Educate, Educate...obtain approval to set up a dedicated space at the expo to interview presenters, lecturers, experts and share their knowledge with your social media audience
Set-up a podcast/vodcast at the expo...that usually draws a crowd...ask experts in their respective fields to join you 'at the mic' for a few minutes...not only can you social share that content on your future vlogs, but you can pay-it-forward with your interviewees by providing them edited content to share on their social networks
Whether you've rented event space FOR your event, paid for a booth AT the event, or you're a FEATURED presenter or panelist...don't waste this great opportunity to gather ENGAGING marketing video content for your business/service.