Arizona DUI: You are being charged with a crime, you have the right to have an attorney represent you in court.
It should go without saying that when you are accused of an DUI in Arizona, which is a very serious crime, you have the right to have an Attorney represent you at every stage of the proceedings. Occasionally DUI defendants are asked if they want to waive their right to have an attorney and deal directly with the prosecutor. Most of the time this is a grave mistake. The right is there for a reason.
I am a lawyer, but I don't try to keep my own books or do my own taxes, even though I have had a little bit of real world experience. I also would not fill my own cavity if I had a dental problem, nor would I operate on myself. Most people who represent themselves in court have fools for clients (this even applies to lawyers who get DUI charges and then try to go it alone).