Remember, the rules say "no communication". This would mean no writing, etc.
Really, the rule that will be enforced is no communication about the way to move a character, attack, use a power, item, etc. between all players. We have a very, very large percentage of really new players coming out for this and I'd like to let them sink or swim on their own. I also want to avoid the situation where one person effectively plays another persons character. I'm sure anyone reading this post knows what I mean.
You will also not be allowed to "encourage" members of another team to make any sort of move, attack, etc.
We will take the time to go over combat advantage and how to attain it before the event begins. I will also be giving players a fair amount of time to discuss strategy before the event begins.
With respect to PHB3, Battleground has it and it is for sale. WotC allows us to now get the product and sell it a week or so before the street date. With that said, I am not going to make any sort of effort to include a character from the book. There is a chance one will appear, but I won't go out of my way to create one.