20 years old, $267 underage drinking ticket for .008BAC. Contest?

So a couple weeks ago I was at a party and decided to drink a can of beer. Unfortunately for me the party got busted (on grounds that will be contested by the residences of the house), and I came out of it with a $267 fine for having a BAC of .008 (possibly even .005, as that was the last number i saw on the breathalyzer, but some friends said it was .008. it wasn’t written on the ticket).
The cop asked me if I had been drinking AFTER he gave me the breathalyzer, and I admitted to having 1 can of beer. It is my first UA, and as far as I can recall my first ticket for anything.

So, now my court date is tomorrow, and I’m wondering if anyone can give some quick advice—does anyone think it is likely that I could get the ticket dropped? (this is in Wisconsin, where in some cities there is no fine if it is under .01. It is also a college town.)
The officer gave me a pamphlet about a class I can take, and get the ticket reduced to about $140, but it says in order to do that I must plead “guilty” or “no contest” and request the class option.
I’ve never been to court before, so I really don’t know how I should approach this, just looking for some last-minute advice I guess.

And please, don’t bother with “you should just man up and accept the consequences for your crime, etc., etc.”. I’m 20 years old, had one beer at a party, and a BAC that (had i known at the time) I could have attributed to mouthwash. I also don’t have a driver’s license, regardless.

Thanks in advance!