69. Mark the spot. I think it is Smudge
65. No earthly returning age. Is Aeon, I think.
Also, I think you may have 37D down as Christmas Eve, instead of Christmas Day. This would change the letters in the 3 clues you are looking for. This makes 73. Such power is a prerequisite at this time -T-Y-N.
Can you help me with 2/57DWhat the users will have if coming down after the 25th? Good Target fits, but makes no sense to me.
Thanks. Merry Christmas.
Hopefully someone else can help us with 73.