Wrap as you go. You don't want to be overwhelmed and overstressed Christmas eve.
wrap as you go along. That way you don't have to do it all at once.
wrap them as you go along then your family are left in anxiety about there presents.
I find it way too tiring to save it all for one night. I prefer to either do it as I get the gifts, or at least spread it out over a few days.
I do it now. I've been up till 3am wrapping presents only to have the kids wake up at 5am.
Then your mission is clear.