Lots they could do. Just a quick thought- you're in a thestral carriage on a nice little tour of all physical sets. Get to a screen- Hagrid tells you xyz is coming and you need to get out immediately and the thestrals are spooked and won't go any further. All done on a screen scene- he takes them off the carriages, grawp comes and ties a long rope to it to drag you out of there and as he goes off screen pulling the rope he starts dragging your around super fast. All physical sets with some screens mixed in background so you can see the occasional grawp hand pulling or foot running, etc.
That's just an off the cuff idea from someone who doesn't create rides- I mean, it could literally be anything. . In JK/UC we trust.