[confiscate]

have you considered which side of the market is more important to focus on first

if you can get a lot of attendees to willingly use the app, the event organizers will follow. They might even knock down your door demanding to pay you $ for a chance to be your customer

if you get the event organizers to sign up, but the attendees don't use the app, then the event organizers will leave

so it would be best to focus on signing up attendees first? aren't they 100x more important then convincing the event organizers? just a thought.