Chris, although Peter is opening the doors for us one hour early at 9am there is no reason to show that early.
He is open until 2pm, so even showing up at 11am is ok.
Growing up 10 mins from The City I have never stayed in a hotel in The City, but there are better prices out there.
After Atlantis there are some who will go out to eat and there are some who will go to Spooky's house (although he does not want this openly announced on ECC).
If you guys can get a group to go you will have a boatload of fish to choose, from not only Atlantis' selection but Spooky's as well.