If you say you're going to be closed 6-6:30p but really mean 5:55p then just advertise that! I raced to get here before 6p and was told the guy in front of me was the last customer. I pointed out it was 5:55p and it was reiterated that he was the last customer. This is after they screwed up my prescription at lunch and I had to come back for the second part of it after work. I risked getting a ticket to make it on time.