I'm 21 and will be going there with only my cat . I've applied to housing at Butler and Lawrence I believe -- the only ones that allowed pets. Hopefully loneliness isn't a problem, I figure thats what the visit day will tell me. My other visits have all showed a great community of grad students within and outside of department boundaries, so I hope Princeton is the same.
I'm Canadian, but I've spent time doing full time research at American universities before, so I figure there won't be much of a transition. Nice to see another Commonwealth-er.