Why would someone dismiss a ticket that is apparently completely valid? If prosecutors were in the habit of doing that, it would royally piss off the cops.
As for the chances of a reduced fee, the answer is somewhere between 0-100%, but the speculation of anonymous strangers on the internet is utterly meaningless. Further narrowing down the likelihood would require local knowledge. Follow the procedure to dispute the ticket and see what happens (I'd suggest consulting with a local attorney, but the attorney's fees would almost certainly be greater than any savings you might realize).

