Availability has varied depending on time of year. Late May to early Sep, they often fill for multiple days of any given week during the 11 month window and often early in the morning at exactly 11 months out, but sometimes you can find three to four days in a row open at 7 months out (and there is no "usual" time for that). Post Labor Day through first week of Jan, they often fill two to three days a week, more during holiday time, during the 11 month window, but sometimes you might find them open for a week at 7 months out. After first week of Jan until Presidents' week, they are usually open at 7 months out. Thereafter, until latter part of May, they often fill during the 11 month window for one to three days per week, more during holidays, but then you can sometimes get lucky and find an opening for a week at 7 months out.