I'm almost to the 20 day mark!
I haven't started packing yet, but a couple months ago I made my DD6 2 princess dresses. At that time, I asked DS9 several times if he wanted any costumes. He said that he wasn't into that anymore. Okay, my little boy is growing up.
Then, we went to a Renaissance Festival the other day where we threw together a pirate costume for him and we all went dressed up. He loved it! It reminded him how much he loved dressing up and getting into an event. So on the way home he tells me, "Mom, I want costumes now for Disney. 3 of them

"
So, needless to say, I have my work cut out for me. Fortunately, He has 1, we were able to piece one together from things he has, so I only have one to sew. But still. It's another thing to add to the list I have yet to begin.
Fortunately, like most of you, I love planning!