Legal Question in DUI Law in Nevada

Most tourists who get criminal and traffic charges while in Nevada simply hire an attorney who can waive their appearance and do everything in writing. Of course if there is a trial you would eventually have to come back to testify. I just did a DUI where my client lived in Canada and we did a plea bargain all in writing and I appeared for my client and he took an on line traffic course in Calgary, paid and fine and now the case is close. I charged him a flat fee and he was happy.