Got our first booking for 52 nights. Obviously there's plenty of luck in these things, but also just following Adam's basic rules clearly worked; list early before it's ready (now the race is on the get it ready for then), resist the temptation to open up to short bookings that would block these opportunities, and list a property that has some unique benefits; e.g. this one has 2 good en-suites that none of the others in the area has.