The phrase denotes a celebratory gathering occurring in San Diego, California, around the Halloween holiday. These events typically feature costumes, themed decorations, and activities designed to entertain attendees during the late hours of October. For example, a venue might advertise that it is hosting a significant costumed event in the city on October 31st.
These seasonal festivities offer several advantages. They provide opportunities for social interaction and community building, stimulate local economies through event-related spending, and contribute to the overall cultural vibrancy of the city. Historically, such gatherings have evolved from simple neighborhood affairs to large-scale public and private functions reflecting current trends and entertainment preferences.