For each day of a picnic or outing, as defined in Section 838.01, the person intending to hold such picnic or outing shall be required, not less than three days prior thereto, to obtain a license from the Mayor for that specific day. The fee for such license shall be twenty dollars ($20.00) if such picnic or outing is held on a Saturday, Sunday or holiday, and ten dollars ($10.00) if such picnic or outing is held on any weekday. Such fees are payable in advance.