St. Patrick's Day, Chicago

My son came to me in early February saying, "you won't believe this, Dad, but a kid at school told me they dye the Chicago River green for St. Patrick's Day!  That can't be true, can it?"

I replied with some excitement, "They do!  Would you like to see them do it?"

And so, the family burned a few hotel points (Palmer House, concierge floor) and US Air frequent flyer miles to enjoy St. Patrick's Day in Chicago.