First MIP for a 17 Year Old

[aaakeith]

My question involves criminal law for the state of: Michigan

A few weeks ago I was charged with an MIP at my school's prom.
I had a flask of alcohol buried in my overnight bag in my friends car, which was parked in a parking lot in which we had no access to during the dance.

During the dance I was pulled in by security, who did a sweep with drug dogs on the cars in the parking lot and found the flask in my bag. The cop shoved a breathalyzer in my face and said blow, and at the time I didn't know that I had the choice not to take the breathalyzer or not to answer the cop's questions.
I blew 0.00 as I had not a drop of alcohol, and was charged with an MIP for having the alcohol in my bag.
The flask was mine, the alcohol was not. I understand that this makes no difference to law enforcement.

My questions are, what are my penalties? Should I plea guilty or not guilty?
I don't drink, and this is a first offense. I don't know how this works and I can't afford a lawyer.

[indybail]

If you don't drink, just what are you putting in that flask? If you plead not guilty, someone is going to ask. You better have a good answer.