No licensee shall: Remain in a private residence or commercial establishment or on the premises thereof after the owner or occupant has requested the licensee to leave; or, Enter into or upon the premises of a private residence or commercial establishment for soliciting, when the owner or occupant thereof has displayed a "No Soliciting" sign on such premises; or, Enter upon residential premises for soliciting during nighttime. Nighttime is defined in Section 1-102(a)(18) of this Code.