I'm so sorry I missed a few posts but launching a new Web site take up all your time, just like the last week or two before your wedding. No matter how much you plan for in advance there's always more to do and there are so many tasks that you can't actually get to until right before the big day.
When it comes to your wedding, and the final countdown, it's very important to delegate responsibilities to your groom, mom (and his) and bridesmaids. It also helps if you've hired a day-of coordinator, who really starts about a month before to handle logistics and finalize vendor details such as drop off, load in and load out schedules.
Also, think about all the things you want to make for your wedding and complete as many tasks as you can in advance. I know you can't finalize your seating chart until all RSVPs are in but you can make your programs, package non-edible favors, draw up a do and do not playlist and write your toast.
Moral of the story: The more you can do in advance of the last week before your wedding the less stress you will have going into your wedding.