Taking my son to Universal Studios

Yes, I'm a Christian and a Harry Potter fan (it's fiction, not real life). Trying to plan a trip with my bestie. My son is 4. My hubby will be working so he can't come. But I kind of feel like I shouldn't expose my son to that. But me may just not understand. Not only is he 4, he's on the spectrum. Or is this really any worse than the Disney trips he has been on? Thanks