Should cancellation be necessary, written or email notification to ATD San Diego is required five (5) business days prior to the first day of the event. You may receive a full refund, minus a 15% administrative fee, up to and including the 5th business day before the event. If you find that you cannot attend, and it is less than five (5) business days before the start of the seminar, you may send a replacement, with written notice to ATD San Diego. If you are unable to send a replacement, your registration fee will be forfeited to ATD San Diego.