My best GCH advice is book very early. We are going in October. I just went to book last week, and all rooms were sold out except pool view. I booked it, and then next day, every room was sold out. Now the Acadia 2 bedroom suite is the only thing available at $6600/night!! I book as soon as I think we will be going; if any discounts come out, you can try to add them later. But in 2021, we had a last minute change on our October trip from WDW to DLR. I could not get the GCH despite trying several times per day for 2 weeks. So we had to stay at the DLH. It was very nice, but I really love the GCH! So book early!!!