I'm not sure how relevant this is, but I'll share it anyway. I was hoping to book an OKW GV for Easter week at the 7 month mark, even though I knew it was a long shot. When I called (and I called at the end, not day by day), they only had some of my days available. I did not want to waitlist, so I did not take it. They did have GV availability at both SSR and AKV for my entire stay, so I took SSR. Even though it is a holiday, you might still be able to book a GV if you can be flexible. Good luck!