You may have to cancel the 5:15 ADR. I had one at 5:30 and it wouldn't show up until I cancelled it. On another note I was disappointed in the FP+ for MSEP. Don't get me wrong, it is in a great spot, but you are not guaranteed a front row. The night we were there we actually had to line up at 6 to make sure we were one of the first in the FP+ area so we could get in the front row. With little kids it does no good to get 2 or 3 people deep. The area was really crowded and people were trying to push there way in front of us even though we were at the rope and were there early. For some reason I thought you would be able to be in front with the FP+. So just make sure you are there early even though you have a FP+.