I'm staying at the Hilton near Grant Park for two days. What's the easiest/safe/affordable way to get around. I think I'll walk to the Shedd Aquarium/Field Museum, then want to check out the Magnificent Mile shopping & maybe the John Hancock Center. I don't mind walking a mile or two if there's stuff to see on the way and there's lots of other people around.
I considered the Chicago Trolley & Double Decker company hop on, hop off for $31 for three days or are taxis cheaper?