[N]o private organization or group of private persons may use the roads immediately adjacent to and those roads which lead directly to the Forsyth County Courthouse grounds for private purposes of holding a parade, assembly, demonstration, or other similar activity on any non-holiday weekday prior to 8:00 a.m. or after 5:00 p.m. or on any Saturday, Sunday, or public holiday prior to 1:00 p.m. or a