By the way, the main hotel recently told us a couple of the rooms had some cancellations. I just checked the site, and it does indeed look like there's a few rooms available now! Including doubles! If you need one, go check, maybe luck will be on your side!
The "Book by" date still says 3/12/2019, but we've been told that has been extended in the back end for a few more days. But that'll expire soon, so if you still need a room check soon!