Possession of marijuana sentences?

I have my first court date for marijuana possession first offense in Rhode Island. I looked up the possible penalties and I read that it would be a $200 - $500 fine and a possible up to 1 yr. in jail. When I was arrested, the police officer told me it would most likely be a fine and it would be expunged from my record in a year as long as I don' get into any more trouble. However, I am out of state, and am a bit wary of the judge coming down a bit harder since I am from New York. What would I most likely be looking at. I also have no record, and no tickets ( aside from a few parking and inspection tickets).