From 8:30-10am each day of weekend. Park in employee parking, enter and sign in through the security side door. Mention you are with SPAP.
From 10am-until closing (will vary from October and November, but we will try to advise that information via emails to membership), also Old Tucson is open to the public various times. Park in public parking lot and enter through main gate. Again mention you are with SPAP and will be painting in the Park to avoid the paying entrance fee.