I didn't see this information in this thread, but I think it's useful to know....
Mickey's Once Upon a Christmastime Parade (replaces FoF in late Dec) at 3:30pm has FP+ times of 3:10-3:35pm
Main Street Electric Parade at 10:15pm has a FP+ time of 9:55-10:15pm
Holiday Wishes - Celebrate the Spirit of the Season (replaces Wishes in late Dec) at 9:00pm has a FP+ of 8:40-8:55pm
If you want to book these experiences, make sure you do NOT book anything else that you want to keep in those time slots. If you do, they will not show up as an option when trying to "change experience" (because they conflict with another FP+).
mesaboy2 - I don't know if this info is useful since it's December only, but perhaps something similar would be good to add to your first post. I know I made the mistake of having a 5 minute overlap with a FP+ I was keeping and it prevented these options from showing up.
I found it confusing that one "expires" at event start time, one stops 5 minutes prior, and the other 5 minutes after. They also have different lengths of return windows.
I'm sincerely sorry if this was posted somewhere in the thread. (if so, I missed it)