I apologize in advance for bringing up this topic again, but I don't want to misunderstand and then mess up our visit to MP in late August! !! It sounds like it's very convenient to get the tickets in AC for the bus from AC to MP and also for the entrance tickets to MP. Our question has to do with the business hours of the ticket office in AC: how early does it open and how late does it stay open? We will have gotten to AC in the late afternoon for our early morning visit to MP the next day. If the office is closed by the time we arrive in AC, can we still count on getting both sets of tickets in the early morning, for an early bus to the ruins that same morning? Thank you for your help & our apologies again for repeating this topic!