Super friendly staff! I liked the variety of things seen on the downtown tour route, which also let you get off at certain stops. Saw the finance district, the small historical district and park, the county buildings, the sports stadiums, the theater district, some nice public art, and more.
Brief break back at the visitor center before getting on a different bus and going to the space center. Big lines for the team tour, but it was cool to get a feel for what it's like as an employee there. Of course I could've spent more time there, but the 4.5 hours and return time actually got perfectly with my schedule. Glad I did it.