In this video Attorney Daniel Leavitt explains what you should do if you ever find yourself in the situation where you have been pulled over at a DUI checkpoint and you have had a few drinks.
If you get pulled over and you've had a few beers, what I would recommend doing is not rolling your window down too, too far. If you have a breath mint, it's probably a good idea that you use a breath mint. I would recommend that you, to the extent that you can, you assert your right to remain silent. So you don't have to make any statements to the police.
The police officer's gonna ask for your license and registration, provide those, have those handy. I wouldn't roll my window down too far. Hopefully the officer doesn't notice that you have alcohol on your breath. But I wouldn't, in general, advise that you make any statements to the police regarding your case. You have a right to remain silent. If a police officer does smell alcohol and he starts asking you questions about that, you have a right to remain silent and you should assert your right to remain silent.