I agree with Bob. The only problem I ever had was getting home after spending several hours with Bob at Canucks a few years ago. Fortunately a taxi brought me from the watering hole to my door safely. I think?
Seriously, when my kids were a little younger I used to try to get them back home at a reasonable hour. That is difficult in the late teen and early 20's years. But they were warned to stay in tourist areas, stay in groups and absolutely no drugs meaning them or anyone in their company. Also, my advice has always been that "no good happens after midnight"
They know many locals and didn't always follow my advice on midnight but neither of them ever had a problem. Normal common sense almost always will prevail. I'm as comfortable here on the Island in my travels as I am in my home town, probably more. Like Dianne I carry a flashlight at night. (a special one, but I also take special precautions at home, it's just me)