I haven't arrived in Shanghai yet (t-minus 2 weeks), but I've already heard various things about the 10-1 National Holiday.

Fact or Fiction?
-Don't stay in Shanghai since it will be packed
-Don't think about visiting HK either since it'll be packed
-Actually, don't think about going anywhere in China since it'll be packed
-Book your tickets now, otherwise you won't be able to
-However, no one knows the vacation schedule yet

So...can anyone tell me what the vacation schedule will be or is this one of the great mysteries in life?