I'll be meeting my wife and teenage daughter at O'Hare on a weeknight around 8:30pm. We need to get into downtown at Grand and State. I've read in other posts about how to easy it is to take the Blue line from O'Hare to Washington station, transfer to the Red line and go up two stops to Grand station. Given the time of the night we would be on the train (9pm -10pm) and the area we're traveling in, can we expect it to be relatively busy and safe? I've been very comfortable using the NYC subway but didn't know what to expect in Chicago. We like using public transit but didn't want to be careless our first time in Chicago. Taking the train seems like a great option but any advice pro/con would be appreciated.