Not quite sure I understand what you mean?
Whilst one side of the East Stand (Family Stand) will be next to the North Stand, the other side of the east stand will be next to the South Stand.
If you mean swearing, there will be a gap between North and East stand until the corners are filled in.
Hopefully it isn't too detrimental to the atmosphere!
I didn't realise it was the whole of the East Stand. That said, even if you are in the East Stand, I suppose the further away from the Family Stand you are the more tolerance there may be. Especially since the other end is going to be right...
Shouting (more swearing etc) is tolerated everywhere apart from the Family Stand I believe.
Last four rows of North Stand is the only place where consistent standing will be tolerated.