Yesterday, I finally bought the tickets for my sister and I for Saturday only. Since we're only 2-2 1/2 hours away, we're going to just leave early Saturday morning, stay all day, then come back late Saturday evening.
If anyone in the Chicago area wants to go but doesn't have a ride, then let me know, and maybe we can work out a carpool or something.
By the way, I can bring some stuff, if anyone would like.