Search for" Amusement Labs " on YouTube. They have lots of how the ride is made videos.Oh I love the watching video ideas! He is super engineer minded. Are there any videos that show how the rides work? He might like to see that and may encourage him to try the experience.
Also you might look for "ride name" light on videos . That is what convinced my anxious kid to do Space Mountain. She realized it was more fast turns than steep drops.