I'd sign up for the party area so my party could be with the other parties, thus creating one big MASSIVE party. Because, let's be real here, when it comes to parting, the general concensus is - the more, the merrier.
As somebody who is also a long time Acen vet - IE I've been here since year one - I would also like to add the following on room parties vs. the Rave.
As soon as the Rave started, it seemed to me that room parties got tamer and less numerous. Tales from my friends pre-Rave about the room parties they attened weren't that cool. Underage girls soliciting adult men, people not carding the booze, you couldn't sleep due to the noise, etc. The con would be littered with home made flyers for room parties advertising all sorts of entertainments and themes. When they started the rave, this appeared to go down. The hotel, in the room areas appear to be much quieter over all. And situations appear to more be just one or two big things that happen (like the shopping cart and window things) instead of "Did you hear about x that happened in party 1 and y that happened at party 2 and z that happened during party 3."
Party people are going to come for the party, no matter what. And they don't come thinking "Dude, my goal for the weekend is to totally break out a window of the hotel." They come thinking "I'm going to drink, get laid and have a great time." Unfortunately, many people don't learn self control, limits and how to have fun without acting stupid. Having a rave or dance or some sort of late night event that allows people to have fun in a monitored situation allows the con staff and other responsible individuals to watch those who can't seem to control themselves.
By isolating room parties to a single, seperate, physical block you can then monitor the parties for trouble more easily, select room types that are better able to handle what's going to be done in them (ie - no balconies) AND give the IRT authority to calm roudier rooms by essentially telling them "Sorry, you need to be on the party block if you're going to make this much noise. Now settle down or we're pulling your badge." Rules do more than just deter, they also give those in charge of enforcement the authority to act.
The main thing that we as con-goers can do to ensure that Anime Central continues and is welcome in Rosemont is to be community minded and stop vandalism/irresponsable behavior as we see it and to report any incidents we see of people damaging the con. These individuals, if caught, will probably not be allowed back to Anime Central and it's important that bad seeds are prevented from coming back.