Contact physician groups who have participated in past health fairs the promoter has held to gauge their level of satisfaction. If the promoter organizes a fair poorly or overlooks some important details, participants will focus blame on the most visible villains - the exhibitors. Make sure your exhibit isn't next to a competing practice. What about equipment, carpeting, plants, etc. The last step.
Evaluation is an important tool for planning future health fairs.
After the fair, talk to the planning committee, exhibitors, and others involved with the fair about their perceptions. During the fair, you can even have attendees fill out brief surveys about what they like and dislike about the fair to be submitted for prize drawings during the fair. Door prize registrations are a good way to get a count as to how many people attended the fair. Thank everyone involved. Send thank-you notes to people who helped out and were key to the success of your health fair.