NBC City is awesome! There's TV's everywhere you look which only show basketball, ranging from the classics until present, but all NBA. The boys love seeing the games from the 70's and 80's. There is unbelievable memorabilia everywhere, and off course the restaurant is themed in Basketball right down to the Slam Dunk French Fries! Even the bathrooms offer miniature hoops to slam your trash away! The kids will love the gift shop and there are basketball shootout games to play. My boys all time favorite is that they take you can pick your favorite player and they'll take your picture and have it look like your standing next to the guy! It is so great. (Framed 8 by 10 picture was about $24.95, but it sure beat buying them another disney t-shirt!)
It does not cost anything to enter City Walk until after 9pm. City Walk compares to Downtown Disney. You can access all the shops and restaurants until 9pm. It's a lot of fun! I definately recommend this. I also am a Disney fanatic, but as my sons get older, we try to go out of our way to find something just for them. Don't forget to check-out ESPN Zone at the Board Walk, also great.