They stack on each other and the charges are more severe with each violation.
Yes. When you're arrested the state will give you a piece of paper that's a temporary license good for one month and they take your permanent license. Get a DUI attorney involved quickly because I can ask the court to establish a trial date within one month and also extend my clients license privileges until the court date.
Normally from the time you're arrested to the time you bond out you spend a minimum of three hours in jail.