There is nothing to be afraid of and you won't get in too much trouble (at least from my experience). I have 2 DUI's under my belt. I got them in Massachusetts. I lost my license for two years, had to do alcohol classes, mandatory recovery meetings (i.e. AA or something similar), check in with a PO, do random drug tests (which were not many), and pay fines.
After a year, I was eligible for a Cinderella license, which is a 12 hour license. It was a money drain and a p.i.t.a. But it is a good reminder on why you shouldn't drink.
Unfortunately, it still haunts me. My last dui was 8 years ago, but it might get in my way of trying to teach overseas for a year.
However, I was able to acclimate without a car and have been without one for 8 years. I might have to get one soon, but I ended up saving a lot of money and using public transportation, biking, and walking has kept me in good shape.