Wow, we stopped by on Sat. night to show the kids what it was. There was a 4 HOUR WAIT! A man with a pager said he had been there for 3 hours already. We had better things to do, so we left. Unfortunately, they aren't setup to host parties yet and the website said they wouldn't be until March 2010 but that they would love for you to come celebrate your birthday anyway. Our kids bdays are in Dec., but we won't be attempting to celebrate their birthdays there until next December cause I don't think birthday fun includes waiting several hours in line.
Good luck if you go.