I find packing for a winter cruise is easier, because the summer clothes are not being worn. For a winter cruise, I start packing a few weeks ahead.
We're sailing later this summer, and I suspect we'll be packign over the last few days.
Doesn't matter what trip we take ..... I will be up till the wee hours of the morning, double and triple-checking. And once that is all done, I'll sit and relax to unwind.