Hi all!
Thanks so much to everyone who made recommendations for me -- it was very helpful and we had a great time!
I just spent half an hour writing in detail about our trip (potentially useful stuff for anyone who might be planning a visit) but MDC logged me off and my message was destroyed!!! Aarrgh!
So here's the short version:
Millennium Park: Great! Excellent for DD to run around and great cityscape for me to enjoy.
Shedd Aquarium: Great exhibits, kind of exhausting, but worth it. Buy tickets online in advance!!!! Most tanks not visible from stroller height. Outdoor North Terrace is enclosed & DD could run around, liked that as much as exhibits or more.
Lincoln Park Zoo: Way more toddler-friendly than aquarium. We loved animals, carousel, children's section. Not crowded the day we were there, but probably is on a nice day.
That's all for now. Ciao!