No persons shall be permitted to offer or expose for display or sale any goods, including but not limited to Easter and Mother's Day flowers, fireworks and other seasonal or holiday related merchandise, in the open air or from a nonpermanent structure, as defined by this chapter, unless authorized by the Worcester Township Board of Supervisors in conjunction with a special event sponsored or supported by the Township. This section shall not apply to permitted outdoor displays of merchandise being sold immediately adjacent to the principal structure by the owner or occupant of the principal structure. Furthermore, this section shall not apply to permitted sales of Christmas trees and related merchandise.