(a) The fee for the license required by Section 715.02 shall be as follows: for each circus, carnival, side show, musical or minstrel entertainment or exhibition, fifty dollars ($50.00) for the first day, twenty-five dollars ($25.00) for each day thereafter; provided that such fee shall not amount to more than one hundred and fifty dollars ($150.00) in any one week.
(b) The Mayor may, in his discretion, grant without cost a license for the holding of a circus, carnival, side show, musical or minstrel entertainment for not more than six consecutive days, where all of the performances are fostered and supervised by civic interests of the Municipality and a substantial part of the funds derived therefrom is expended for charitable or civic purposes.