Keep trying, even when you are there. We got one for our Dec. trip at 60 days at midnight, and it was for 9:00 at nt.! We wanted to ride it again, but weren't going to wait in the long lines. On the morning of our second MK day, we had planned to RD to do it first thing, but DD was not getting up, but I was checking the app, and FP popped up for 3:00 that day, so people do change their plans and drop them. If you can't get one, do RD if you can, try to get a prepark opening BOG brft., or go during parade/fireworks if you don't care about/see another day because lines are shorter, or jump in line at the end of the night, which guarantees you will get on, and line is often not as long as posted. Good luck!