^ omg, yes, you must stop by Laduree AND Dalloyau! They're hands down the best patisseries in Paris.
As for dress code, ok, take the normal dress code for Berkeley and pack exactly the opposite. The French are not exactly RTW in the streets but they do have style. And for those holey jeans, save them for the plane trip but whatever you do, do not wear them while you're sight-seeing.
OMG - you're going to have so much fun! I
adore Paris. It's the first European city that I've visited and by far my favorite.
Have a wonderful time. Take tons of pictures and don't worry about internet connection. You're going to be too busy looking at the gorgeous architecture, sampling the delicious food, shopping, etc. You're about to visit one of the most romantic cities in the world...