A Michigan law that went into effect in 2004 is one of the strongest Minor in Possession laws in the country. This "new" law prohibits any bodily alcohol content for minors (with a few exceptions for religious drinking, drinking for an educational purpose, and when drinking was done in Canada or Wisconsin).
Although a minor in possession is a misdemeanor charge with up to $100 in fines, and alcohol education or treatment and community service requirements, judges have some discretion. They can, for instance, order jail time for juveniles with a prior MIP, and they can also give first-time offenders, like you, a way to avoid having any misdemeanor record at all.
With your MIP, a judge can give you probation, the terms of which are similar to what you would face with your misdemeanor charge - although there may be random or regular chemical breath testing required as well. If you meet all terms of your probation, you can have the case discharged and dismissed, and you will not have to report any arrest on any employment forms, college application forms, et al.
There will be a record of your arrest available to law enforcement officials and the court, in the event you violate the law again.