We had a wonderful time! I've lived here for 17 years and my guest was visiting from Malaysia, we both really enjoyed the tour. I learned things about Houston that I didn't know. The double decker bus tour was great, as was the Space Center.
City sightseeing tour part was fine, but we needed more time at NASA's space center. There were two tram tours, but it was crowded, so we could take only one tram tour.
Good value for money as you get a tour of Houston, transport to and from the space centre and hen back again. It had a bit of a theme park feel to it so great for families and kids . Lots of exhibits and the lines moved quick. I don't feel the need to return but am so glad we did it