I've also been told (but am unable to confirm) by a Welling-attending Wimbledon fan that the Dons have given us Block M in the stand for any away fans who would prefer to sit.
it will be segrgated it always is. you will either be given a bit down the side ( john smiths stand , or a bit of the Kingston road end ( behind the goal) im not sure about seats i think you can sit anywhere .. but youll have to get there very early if you want a seat as they will probs sell out.