When I called the reservation line last night they said that people often cancel the most a couple weeks leading up to your date. People are always changing their plans, some people may need to cancel their trips altogether, life happens. I have an appointment for my daughter but not for the day that i want so I am calling every second day. So far not much luck but the lady I was speaking to seemed confident that a spot would open. If you are really eager to get in try to be flexible with your times. When I phoned there were evening appointments available but it didn't seem worth the cost to get them made up only to have to leave 2 hours later. But if it's really important to you, evening appointments seem to be the easiest to come by in my experience (I've been calling them a lot lately, lol). Good luck!