What will happen to my son's DUI first conviction?

Well this depends on the reason why he is in AA. If it is because if he can end up with no record if he does what the judge told him to then he is a moron not to complete it. This answer depends on the reason for the AA.

Judge could revoke probation and put him in jail for a bit. But that isn't real serious and the jails are crowded. Lindsay Lohan doesn't stay in jail for long.

If it is a DUI (not DWI), he will be fined and lose his privilege to drive. No jail time is involved for first offense DUI.

Usually, a judge will stay the jail 178 days in jail on a 1st offense. If, your son violates the terms and conditions of his probation he is facing 178 days in jail. That said, most judges will impose some jail if you violate the terms and conditions of your probation. There are many factors and each case is unique. Wherefore, you should have your son speak with an attorney about the specifics of his probation. There may be some damage control that can be done before he goes back to court. Hope this helps.

If your son was ordered to attend AA as a condition of his pre-trial release or part of his sentence he is in violation of court orders. If he is violating a condition of pre-trial release he can be put in jail and forced to post bail in order to remain free while his case is pending, if he has been found guilty or has pled guilty (or no contest) he can be put in jail up to the maximum number of days that remain to be served. He should consult his attorney or if he doesn't have an attorney, he should get one, an attorney probably can defend these charges and keep him out of jail.

If your son was on probation, it is likely his probation will be revoked.