How can I plead not guilty to get my money back and the driver’s license to get an underage to go to the hospital?

I’m 19 and I’m in college. The RA called the cops on me last week because I was clearly intoxicated while I was on my way to my room. Half an hour later, the police are knocking at my door. They decided to send me to the hospital and give me a boy. They didn’t breathe me or take any blood samples, nor did they at the hospital. Basically, I just don’t want to pay $650, my Student Life Advisor said I might have the underage fine dismissed if I plead not guilty and go to court in front of a judge, I might just have to do community service and pay court fees. Does anyone know if I have a chance to pay less if I do this and take it to court? Thank you in advance.