I think it was about a year ago that we left for the east coast, taking one last family vacation before I-day. Our daughter is now on her own in another state. The posters are right, they never come back to your house as a kid. (Of course they are always your children.)
With cell phones, however, it is almost like they never left, after Plebe Summer's 3 phone calls that is. (Summer cruise is a lot like Plebe Summer - hardly any contact.) We don't hear from him all the time, but fairly often. Oovoo, Snapchat, Facetime and other apps help as well. I'll even have running real time text conversations with him watching college football games, including Army-Navy. Our thing was always to get up early (west coast) and watch College Gameday, and a couple of games if he wasn't playing that day. So even though we are 2,900 miles apart we still do some of that as his time allows. The night before Winter Sea Trials, we watched his former high school team win a sectional title on TV together. It was pretty cool. (I had no idea he had to get up in three hours for Sea Trials.)
I do have one piece of I-day advice for parents. Have some Imodium with you. Not sure if was Cantler's or nerves or whatever, but I wound up hunting for the one store open until midnight out on Riva Road or wherever on I-day -6 hours.