Try to get free passes either online or near entra...

Try to get free passes either online or near entrance. So you don't have to stay in line for blue, orange or red team. The tram tours are most interesting part of visiting nasa and with no wait vouchers it can be easily covered in one day.
There is also a huge ass screen which shows pretty cool sci-fi astonauty movies
The food isn't that great inside nasa cafeteria.