We have one, 2 of my DC have ASD and ADHD. Bouncing helps them burn off some excess energy (they certainly have lots of it!) We don't have loud music or noisy smelly bbqs.
I don't think the neighbours mind seeing as their kids use it as well! (Not at the same time as ours.)
No injuries so far, touch wood. Which is actually quite surprising as one of my DCs is very accident prone!