We purchased the 3 day Go Chicago card. It paid for itself by day 2 so day 3 admissions and part of our lunches were free! Also being able to skip lines (some were still long but not as long as the pay admissions lines) was a huge plus and time saver. Highly recommend!
No problems. Good commentary and all buses arrived in timely fashion.
The Chicago Go Card is the only best way to see all of Chicago! Great value.