As a founder of a small local service business (Kalosflorida.com) as well as a newly launched web startup (Mentiontribe.com) I have had the opportunity to both create and market several of our own events as well as be involved in the process for other organizations.
The following are best practices I have gleaned from our successes and failures.
Establish interest BEFORE you commit
The best situation for a large event is to presell tickets using crowdfunding platforms such as Kickstarter or Picatic. This can help you establish if you actually have the interest level you hoped you would have…