My cousin and I are taking a trip to San Juan for a week. It will just be the two of us, and we're a bit wary of traveling alone. I've heard nothing but great things about Puerto Rico, and I'm not extremely worried. But do you have any tips/advice for us besides the usual common sense stuff? We are both 22 and our reservations are at the San Juan Beach Hotel. We plan on having a quiet, low key vacation, with the occasional bar outing. Thanks!