Yes I did have to go to court as you must if you plead not guilty. Just as the officer must be there. If he (or she) doesn't show and you do, you can get a dismissal (you must request it in a proper fashion). I don't have my records in front of me to look at the hearing notice, but if you don't show I guess one of two things would happen: A warrant could be issued for you or the judge could pass sentencing in abstensia, which would be the same as pleading guilty and they would keep your check. When you send in the form and check the not guilty box on the back of your ticket, I don't think it would be a good idea not to show. Could piss off the judge, which is never a good idea. Although I believe you can change your plea at any time up to and including the court date. Also if you read the back of the ticket you will see that you must remit the fine + $6 for collateral and they will send you a hearing notice with court date. Of course you get this back if you win your case.
I helped my neighbor with a ticket recently and when the officer saw the info she was carrying he asked her to step into an adjacent room and the ticket was pleaded down to a fine with no points. They got their money (which is most important, the machine must be fed), she got no points, everybody's happy.
Anyway I did go to court but did not testify except to present the necessary motions. There is most likely nothing you can say that would help your case. Excuses and explanationas, unless very extraordinary, are a waste of time. However it is the officer's testimony and evidence presented that is important.
IMHO pleading guilty right off does nothing to benefit the accused (you). Remeber you are being "accused of speeding". If you plead not guilty three things can happen:
1. You go to court and lose with no plea arrangement (same as pleading guilty)
2. You manage a plea arrangement (maybe lower fine, lower or no points), usually before going into court,
3. You win your case and spend the time but pay no money or get points.
The worst case is #1 which will cost you an extra $6 and your time. Since I don't have any experience with #1, I am not sure if the judge can attach any more court costs than are on the ticket (maybe someone else knows). As I mentioned, 50% of those who contest supposedly win. I guess you could say you actually have a 66.6% (2 out of 3) chance to do better than just pleading guilty.
So from the time you got your ticket, you have 10 days to submit your plea (give the mail some time to work unless you are sending fedex). Then you have time till your hearing date to do your research and prep. If you don't think you can deal with it, change your plea at that point.
Wow, this is getting pretty long. If you decide to fight, let me know and I will point you in the right direction.
Also make sure you send your mail certified so you get a receipt for when they receive it. The U.S. mail system....well you know.
Disclaimer: I am not a police officer, lawyer or judge. I am not giving legal advice, just stating what, IMHO, is obvious from personal experience.
Good luck whatever you decide, and may the force be with you.