Nice write up, and a nice trip down memory lane!
It's funny, I don't have too many memories about Sun Scream, aside from it being "a thing". I remember watching the stunt show, and never being as interested or excited by it as some of the stunt shows in previous years at the park.
It was a mix of something and not a lot at the same time. But then, it was an excuse to open late and just create a bit more of a vibe on park, which it certainly succeeded in doing! Sometimes it's easy to overcomplicate things, but Sun Scream was a nice simple event which added a little bit of extra value to the park's season.
I don't know if this happened during Sun Scream or just summer more generally, but I do also remember having people dare you to press a "big red button" with the slogan "What's the worst that can happen?"...where either nothing would happen, or "something" would happen and you'd win a prize. That was a bit of a laugh if nothing else.