I set off fireworks in the middle of a crowded nightclub
That could have been scary! How could you do something like that, and what happened?
The explosion was deafening and the bouncers just attacked people, it's great it was really worth it!
That is really dangerous and someone could have gotten really hurt. You need to turn yourself in for any harm you did.
Turn myself in for letting people have a good time? Nah.
Are you sure people had a great time or just you? Fireworks in such close quarters is a big dangerous hazard, thankfully not many got hurt. If you don't want to turn yourself in, how about next time set off fireworks in an open field and marvel at the craftsmanship?