Already a customer? Click here to login. Boni's Pre-Cotillion Fri September 12th - 5:30 - 7:00pm Sat September 13th - 10:00 - 11:30am Graduation Ceremony at 11:30am Boni's Main Studio $200 $50 deposit is due at registration, balance will be due on first day of Pre-Cotillion. We're sorry but this event has been reserved. Please review our calendar for another available date and time. Thank you.