I don't know but I've been told that there are all the fireworks you want, if you know the right folks.
Only costs money... cash no receipt, and don't ask too many questions.
The black market is happy to oblige.
This is the Honolulu skyline a couple years ago at midnight New years
Did I mention that Ariels are illegal?
Aloha 
lol.... there's youtube videos out there that shows the aiea/pearl city area at midnight, and it looked like professional shows going on everywhere.
Yeah, not sure on the wisdom of making most "small" fireworks illegal. Instead of spending most of new years sitting back watching or helping the keeds play fireworks, people are telling the keeds to stand back while they set off massive aerial displays, which they can buy in quantities with no hassle, no permits, etc.
I suppose it would be nice if smaller firecrackers are available on the black market, but who would import and buy fountains and crackling balls illegally when you can get aerial displays instead? Cops have a tough time regulating, as there's so many people doing it. It's kinda like attempting to enforce the cell phone walking law. I work in downtown, which by far has the greatest # of violators (aside from waikiki probably), and people do it all the time, and right in front of the cops going to the courthouse. Haven't seen one ticket yet.
Much as the case with marijuana, I think legalization and regulation is the better answer. By leaving the smaller firecrackers and less powerful and noisy aerial displays legal (and much much cheaper), you chop the legs out from the black market importers, who will always have a customer base for big bombs, but one that's much smaller than it is currently. Outright prohibition isn't really a good answer or effective solution when there is a strong public demand for a good or service.