There is a two course mini putt being built right now. Sounds like it should be finished by spring. There are some carnival games and a water spray area. That is about it!
Citywalk really just has restaurants and nightlife and some shops. It has the Blue Man Group and famous live acts at the Hard Rock. There is also a movie theater and soon it will have two mini-golf courses. I'm not sure how far along they are.
It would be much like Downtown Disney but with fewer stores and more restaurants and no kiddie rides and nothing like the Lego Store.
I'm glad to hear Citiwalk is getting mini golf. We found it largely disappointing. Even the shops were a bore. Not anywhere near as family friendly as Downtown Disney. I suggest skipping citiwalk and doing a night swim and hot tub and your hotel.