It really ain't worth a fine up to $2,000 and/or community service, suspension of driving license etc. The minimum fine is $250 or not less than 24 hours community service.
The full code is below:
25661. (a) Any person under the age of 21 years who presents or offers to any licensee, his or her agent or employee, any written, printed, or photostatic evidence of age and identity which is false, fraudulent or not actually his or her own for the purpose of ordering, purchasing, attempting to purchase or otherwise procuring or attempting to procure, the serving of any alcoholic beverage, or who has in his or her possession any false or fraudulent written, printed, or photostatic evidence of age and identity, is guilty of a misdemeanor and shall be punished by a fine of at least two hundred fifty dollars ($250), no part of which shall be suspended; or the person shall be required to perform not less than 24 hours nor more than 32 hours of community service during hours when the person is not employed and is not attending school, or a combination of fine and community service as determined by the court. A second or subsequent violation of this section shall be punished by a fine of not more than five hundred dollars ($500), or the person shall be required to perform not less than 36 hours or more than 48 hours of community service during hours when the person is not employed or is not attending school, or a combination of fine and community service, as the court deems just. It is the intent of the Legislature that the community service requirements prescribed in this section require service at an alcohol or drug treatment program or facility or at a county coroner's office, if available, in the area where the violation occurred or where the person resides.
(b) The penalties imposed by this section do not preclude prosecution or the imposition of penalties under any other provision of law, including, but not limited to, Section 13202.5 of the Vehicle Code.
Quite a few all ages shows in the Twin Cities. Lots of "local" bands big enough to play multiple shows (Atmosphere, Cloud Cult, GAYNGS, etc.) will have one AA show and one +18 or +21 show. It works nicely for everyone. First Avenue will also book AA shows specifically targeting an underage audience - this one for example.
7/24 - Stevie Wonder @ Hollywood Bowl
8/6 - HARD - LA State Historic Park
9/3 - FYF @ LA State Historic Park
i used to walk right in. sometimes i'd show up with a big group of people who were older than me. i'd walk in last, show them my ID (which clearly indicated my underageness) and just smiled. they'd usually just look at me and tell me not to get into trouble. and i wouldn't. i would never approach the bar, even for water. and for the most part didn't drink.