If the officer suspects you've been drinking, reference my last post for more info and keep this in mind:
You don't have to answer the officer's questions
(NOTE: Try to answer, if you can without saying anything that can be used against you)
You don't have to perform any field sobriety tests
If you burp or vomit in the 20 minutes before your breath test at the police station, ask for another 20 minute waiting period.