To be completely honest, I would probably recommend that you shouldn't email them because you are visiting friends/family. The point of an ITA email is to defray expenses for candidates who live far enough away and who will actually be interviewing in the area. Being ITA because of leisure and not because you absolutely have to shows that making a trip back to NYC shouldn't be a problem for you. I think you might actually put your application at a slight disadvantage by sending an ITA for your situation because it could potentially give your reviewer a sense that you are entitled to an interview because of it's convenience for you. The sense of entitlement is definitely one way for certain that you can guarantee that your application will be viewed unfavorably. This is not to say that you are an "entitled person," but sometimes your honest intentions can be misinterpreted as such especially as reviewers are going through thousands of applications. It would be nice if we could all expedite the review of our applications instead of waiting silently for answers but you have to trust the process. If their process follows true to years past, many individuals will start to be hearing news about rejections either this week or next week. Best of luck to you in your application cycle!