We are going this Thanksgiving week and I had been monitoring park reservations for a while prior to us buying our tickets (we needed to wait until after my husband recovered from surgery in early October to gauge whether going made sense). I noticed Magic Kingdom was the first to show unavailable for some days (but actually not Thanksgiving day)- that was probably around October 20th. I also see that on Oct 25th, I screen shot the availability for that week and the Sunday, Monday, and Tuesday were all booked for Magic Kingdom and a few of those days were also booked for Hollywood Studios. October 25th is when we made our park reservations. I have still been checking park availability every few days since then and I believe it was some time early last week that much of the week began to be full for both Magic Kingdom and Hollywood Studios. Hope this is helpful! We are looking forward to this trip as my we get to celebrate my husband being cancer FREE!