how many of each should we bring

Hmm, I believe the packet said like, 4-5 times for formal, same for semi formal, and numerous for casual occasions.. I'm personally bringing 6 button down shirts, that can function as either, 5 polos that will do the same.. and about 4 ties, You can variate yours around that as you wish :-P.

I'm also bringing detergent to do a load of wash when i'm there, so i'm not wearing dirty clothes; You can bring extra clothing to fit that so you don't have to do laundry, or you can bring detergent so you can bring a smaller pack of clothes :P.

Hope this helps!