Drivers and staff of the tour company were very helpful, knowledgeable and attentive. Could not have asked for better. The Space Center itself was a slightly underwhelming experience, a number of very detailed displays in a relatively small area. The poorest part of the Space Center is the tram tours, for which the reservation and marshaling of the queues leaves a lot to be desired. We reserved a 14:30 "White Tram Tour" (which goes to the historic restored Apollo Era Mission Control), but our group did not get boarded and moving until nearly 15:30. This is not however a criticism of the Space Center tour guides, who were excellent.