Owen rated this 3.5 ("only if I won't get sick"). It's part of the Astronaut Training Experience which is a separate $175/person, 4–5 hour program — not included with admission.
At that price and time commitment, it would replace most of the KSC day (Bus Tour, Atlantis, Spaceport KSC, Hyperdeck VR). Not recommended for this trip unless Owen really wants it — his other KSC wants (Hyperdeck 4.5, Spaceport 4, Saturn V 4) are all included and better value.