I would go nuts if I waited that close to the trip. I guess I am a bit neurotic when it comes to packing. I am always afraid I am going to forget something. I am always packing and re-packing and debating about what I should or shouldn't bring.
I am a chronic overpacker. For our 4 day cruise for 4 people we had 9 pieces of luggage!
I just make lists -

like - next week I have to visit my mom all week - so I am leaving my dh and his sister(who is visiting from out of town) in charge. I leave a list for everyday, who does what, what to eat, who has to go where... one of these days I am going to go away and not leave a list and see if they make it through! LOL
I already have lists started for the trip...