About the characters: We are AU but still in the same universe. If you want to be Greyback that's fine, but you have to come up with an original plot for him to follow -- he can't do the same things as he did in the HBP.
That said, everything seems to be going smashingly for our first day! Good job everyone! Tonight and until about 12:00 EST we'll be on the train ride to school, after that you all can assume they're settling into dorms and going to the feast/sorting.
Have fun, everyone!