This was our second time here, and going on a Monday made for a huge change. The place was still crazy crowded compared to a Saturday visit, but we were able to get on the tram tour within 10 minutes of getting in line. We did the rocket building and the training facility, which took a little over two hours. Hands-on exhibits in the main area are fun and interesting, but oftentimes may be broken down. Museum area is pretty cool, and walking around the 747 and shuttle mock-up was new to us and neat, but could easily get crowded.