You can explore by yourself less then two hours with games and simulators.
Depends if you do just a tour or try the flight simulators.
It all depends on how much you enjoy it. There is a lot of stuff you can participate in like flying in a simulator and video clips giving information about things. I would say a hour and a half should be sufficient.
We did not do the tour, we went on our own. I would guess about an hour.
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