You can book even before 11 months if you "walk your reservation." I'm not buying or selling this approach nor have I used it but . . . some folks will make a reservation for a coveted week or room type (e.g., studios during very busy times of year) 11 months before the week BEFORE they want a reservation. Then they will change their reservation every day taking a day off the front end and adding a day on to the back end. In this way they "walk" a reservation from 11 months and 1 week out to the 11 month point. Many folks know about this approach and you may hear it mentioned on these boards. Pete even did a show on it recently. I bring it up because your original question was something someone very new might ask and I thought you may not have heard of this. Please note that some may have strong (negative) feelings about this.