No, you didn't mess up. The dates may not have been there day-by-day either.
However, my guess is that if you had waitlisted you would have gotten it. I waitlisted myself for the week after new year in a standard view studio only 5 months out. I got a couple days when I called and I popped off the waitlist for the other days within a couple months. Then, I made someone very happy a couple weeks ago and cancelled the whole week and they popped off the waitlist

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