I did my selections this week. Right at midnight when my window opened, I was unable to get MSEP or Wishes for the first 5 days of my trip (3 showings, due to
MNSSHP). I was surprised that could get Elsa and Anna, but not MSEP. This was the last week of Sept/first week of October.
If it is a priority for your family, I'd suggest planning your MSEP/Wishes later in the trip.