UPDATED INFO: This is a 100% FREE anime convention, including Free and discounted food/snacks (hot meals cost $3 dollars, other snacks and drinks are free). This is an anime convention held at Case Western University - It begins at 10am on November 3rd, runs all through the night, and ends around 5pm on November 4th. I don't know what people who don't go to school there do for sleeping arrangements??? Normally these are held at hotels, so not sure. I guess the "running through the night" is really only helpful if you're a student or know someone that will let you crash with them.
It is RARE to find a FREE anime convention. They DO have speakers and panels and various things and will be showing pretty much 48 straight hours of anime. I plan to try to check it out Saturday night after the balljoint doll meetup.
More Info: http://www.facebook.com/events/430561293668921/