No one likes dealing with the cops, for any sort of criminal defense or questioning, including DUI. You have rights and responsibilities, regardless of the kind of crime being investigated. It's almost always valuable to get an attorney on your side.
Identification? Not Necessarily
Many citizens don't know that they don't have to answer all a police officer's questions, even if they were driving. Even if you must show identification, you generally don't have to answer other questions police might have about anything your plans or whether you drink, in the case of a drunken driving stop. The law applies to all people and gives special protections that provide you the option to remain quiet or give only a little information. You have a right not to incriminate yourself, and you can almost always just leave if you aren't under arrest.
Even good guys need lawyers. Whether or not you've done anything blameworthy like driving drunk or even speeding, you should take advantage of the protections available to you. Knowing all the laws and being familiar with the multiple situations in which they are applicable should be left up to good laywers. Find someone whose main priority it is to know these things for your best chances in any crime, even a DUI.
There are Times to Talk
It's wise to know your rights, but you should think about the fact that usually the police aren't out to get you. Most are good people like you, and causing disorder is most likely to trouble you in the end. Refusing to cooperate could cause problems and make your community less safe. This is another reason why hiring the best criminal defense attorney, such as criminal defense attorney Bridgeport, TX is wise. A qualified attorney in criminal defense or DUI law can help you know when to be quiet.
Question Permission to Search
You don't have to give permission to search through your home or vehicle. However, if you start to blab, leave evidence lying around, or submit to a search, any information collected could be used against you in trial. It's probably good to deny permission for searches verbally and then get out of the way.