Gov or call 1 847 294-4475. For more information on one-time special events, please see PIO-28 - Taxes at Fairs, Festivals, Flea Markets, and Craft Shows.Call 217-782-7126 to request to request an application for a permit. The Special Event Planning Guide is the complete resource for planning your event(PDF, 3MB) . Below is some information to help you get started. Applications MUST be submitted 30 days before the event date. Download a Special Events Application and learn about promotional opportunities for businesses. Concert in the park. In addition to completing a Special Event Application, some events also require a permit. If you are planning to conduct an event on city property, please fill out a special events permit application and return it at least 60 days prior to the event.