The Union Station Food Court Feeder
This place is perpetually crawling with field trip groups seeking one of three things: cheap, fried Chinese food; cheesesteaks; or Johnny Rockets. Actually, some individuals acquire all three.
The Off-Puttingly Friendly Midwesterner
Made the seven-hour drive in from Ohio for the weekend, and they’re just happy to be here. Will smile and say things like "Hi, how are you?" right there on the street, and may even try to pull up a chair next to you and strike up a casual conversation about the weather. Basically, if you see a Big 10 T-shirt and a fanny pack, start heading in the other direction.