So you are saying, "No One should ever take a full day's dose on the fill date, even if they had the Script filled in the AM."
Do you tell your customers this or do you just call them druggies and sellers?
I see an issue with this method unless you are notifying the customer. Any customer that takes the dose as prescribed would need to be at your Pharmacy, in the AM, on that Exact day, and be there regardless of their work schedule. That is unless the customer is not taking the Sched II correctly and saving/selling medication.
Anyone selling doesn't have a problem with waiting until Day 32, because they would not be the ones that are dependent.