Unfortunately, a DUI conviction here in the United States can restrict the countries in which you may travel. Not only do countries have varying degrees of leniency, but the laws may change depending on if you're taking a vacation or applying for a temporary resident permit. Some countries may even outright deny entry for individuals with a DUI conviction as it is considered a felony offense in various destinations. Regardless of where you're vacationing, it's always best to contact a lawyer who specializes in DUI convictions. You'll read many things online and hear varying opinions, but note these may not always be from reputable sources.