Minor in Possession: MIP In Alameda County Questions

My question involves criminal law for the state of: California

Hi,
I was issued a citation in a similar situation. I am 19 (and was 19 at the time) and I was on my way to an invitational (where we would be transported by bus) and had a gadorade/vodka mix in my pocket. Police officers were concealed in the crowd outside the bus, and an officer asked me what it was, and i was intimidated, and told him. He issued me the citation.
Finally, I receive the courtesy notice in the mail a couple of months later, with the exact citation being BP I 25662A*. I'm a little confused as to what the "I" means... does this change anything in terms of consequences or criminal record? What about the asterix? I have no priors, and I am wondering if anyone can give me advice as to how I should approach this... am I certain to get my liscense suspended for a year, or is that just a possibility.
Lastly, if this is relevant, I am being issued this citation in the place where I am a student. I am going home for summer vacation in about a month. To my understanding, I have to do some community service for this citation... will I be able to ask to do the community service in my hometown, or do i have to get it delayed until next year when I come back to the county where I received my citation?
Sorry if this was a little scattered, I'm just really uncertain of what to do here, and would appreciate any help that can be offered.

Thanks in advance for anyone who can offer me any advice or answers to these questions.