My husband and I did the level 9 tour a few days ago, for which we payed $360. Our tour guide, David, was not from NASA, had never worked there before becoming a tour guide, and spent most of the time talking about how he watched the space program on TV as a kid. He exclusively spoke about space missions that occurred before 1975, only about the US space missions and only about male astronauts. There were few facts, mostly anecdotal stories or perhaps made up stories, like the statement that the US space program cured breast cancer by identifying the one protein that causes cancer, and his conclusion that we are therefore close to curing all cancer thanks to the space US space program. As a scientist, I knew at that point that I payed a lot of money to be fed a bunch of BS by someone who still refers to astronaut families as "the astronaut and his wife". At the end of the tour, another attendee called him about about his US centric and sexist behavior, and his answer was that he "misses the good old days". There was another tour guide that day, and she gave a great overview of mission control to both groups, so opt for her. As for my husband and I, we were really disappointed. We felt we didn't see much and didn't know much about the tour other than that David had never left Texas in his life and that he is not someone who would like us or our friends. We cannot recommend this tour for that price.