The only way you wouldn't be able to is:
1. You failed to call at exactly 9:00 am. eastern time at the 11 month date, or
I'm pretty sure it's 9 a.m. eastern. I've called several times just when they opened, (and just before), at 8:00 am, Central time, which is 9a.m. eastern. Several times they said I was the first call of the day. Or maybe my time zones are messed up.
As long as you book at 11 months you should be good.
Phones open at 9am eastern / 8am central.
Online reservations can be made starting at 8am eastern / 7am central.
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