We are travelling across the U.S.A. and decided to pass by Houston for the only reason of visiting the Space Center, as we really enjoyed the visit at Cape Canaveral a few years ago.
First, although it is never fair to compare two attractions visited in a lifespan of a few years, expectations after Cape Canaveral caused some disappointment.
The most bothering factor was the presence of thousands of kids making lots of noise and running around, making impossible to enjoy the visit and access to many exhibits.
The bus tours were also pretty disappointing, as after a total of about 2 hours (about 1 hour for each tour i.e. 50% of the total tour duration) waiting for the bus, we first "visited" the training control room standing behind a large glass window looking at various screens and a few people in the room and then the training center walking along large glass windows looking at several equipment with less then five people in total mostly sitting at their computer. In both cases, the explanations provided by the guide were excellent! However, I wonder whether the whole hassle of the tour bus could be simply replaced by a max screen film and presentation showing real simulations and training exercises.