Packin' Trunk Blues

So, I have to seriously get packing and sorting.  I know I have three days until I actually leave but there's just so much to do.  I also have no real idea what it is I want to take.  I don't want to take too many clothes just incase I buy stuff when I'm there.  Plus, I'm only going for 9 nights/10 days, and who knows what the weather is really going to be like.  Yes, I can get an idea from the weather predictions, but how accurate are they really?!