No such permit shall be granted by the corporate authorities until they shall have investigated the carnival and are satisfied that, if permitted, it will be operated in accordance with the permit and the provisions of this chapter. The corporate authorities may issue the permit and collect permit fees necessary to pay the expenses of the investigation and to aid in policing the grounds and otherwise to compensate the city in such amount as the corporate authorities may determine. Such amount shall be paid by the applicant prior to the issuance of the permit. Any overpayment with respect to police services actually provided at the carnival will be refunded. Each permit shall contain the proviso that police officers shall have free access to the grounds and all booths, shows and concessions on such grounds at all times, and it shall be the duty of all officers present at such carnival to enforce all the provisions of this chapter. In addition, to the extent that the city police services will be provided or the carnival will be located wholly or partly on city property, the corporate authorities may require certificates of liability insurance naming the city as an additional, noncontributory primary insured, a reasonable cleanup bond and a hold harmless agreement approved by the city. The certificate of liability insurance shall be in such form and amount as is normally and customarily required by the city's insurance carrier, but not less than general liability coverage in the amount of one million dollars ($1,000,000.00) combined single limit and two million dollars ($2,000,000.00) aggregate. (Ord. 2092, 10-20-2003)