From a totally unrelated situation, I can say that you can take a year off after graduation and still get into the industry just fine. In my case, I literally had a serious car accident on the day of my commencement from college, which put me in a hospital for a month and a wheelchair for three. I lost that year, basically, as I had to work my way back up to full time work through some part-time jobs. I was able to get a theatre job the following season, though, with no issues - I was honest about why I hadn't worked in theatre for the year after I graduated, but that I was better and was able to handle the physical aspects of the job.
If you are thinking of joining the Peace Corp and traveling outside the US, I say DO IT! I spent a year overseas when I was younger, and it was the best experience I could have done. It will broaden your horizons so much more than can be easily explained. And it will be fine to explain to someone why you didn't have theatre work - its a very respectable thing to do for two years, and now is the best time when you don't have life pinning you in place.
-Centaura