Does anyone know the scoop about Scooby Bucks (are they for anyone or just for season passholders, or are they not used as PKI). We visited Kings Dominions with our PKI pass. The staff their told us that we could buy Scooby at the front gate at a discount and then use them for anything in the park. She also said that if we had any left over we could use them at PKI. Anybody every used them?