DPNC Program Cancellation Policy: Pre-registration allows the Nature Center to secure staffing and materials for programs, so that we may best serve you. We require pre-registration and pre-payment for most programs in order to reserve a space. If DPNC cancels a program, you will receive a full refund. If you withdraw from a program more than 4 days in advance, you will receive a refund less a 25% administrative fee. Withdrawals within 4 days of a program are not refundable. Preregistration for all programs is always recommended. Walk-ins should be prepared to pay by check or with exact change for programs at Coogan Farm, off-site, or after hours, and may be turned away if program is full.