Loading view. There were no results found. There were no results found. South Sioux Mariott Riverfront Events Venues South Sioux Mariott Riverfront 385 # 4th Street Sioux, IA Get Directions Events at this venue Today Upcoming Upcoming Select date. Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file