Well, you can have speed limits. Forbid ICE engines (noise). Also forbid or allow skateboarding (noise) etc. "What should or shouldn't be allowed, or indeed

Well, you can have speed limits. Forbid ICE engines (noise). Also forbid or allow skateboarding (noise) etc. "What should or shouldn't be allowed, or indeed what's reasonable and what isn't, definitely isn't clear-cut in a sense that people in general can agree on." Yeah, it is not. It depends what the park aims for to please and what the majority of its visitors expect. But you can have clear rules that cover most common cases. Same with social media. No need to cover ALL cases. Reality is complicated. And if a edge case happens often - you can make a new rule.