not sure about everyone else, but what we did two years ago was this.
When my S went to his academic squadron and emailed me who his roommates were, I realized one of the roommates mother was on the yahoo group for the class of 2011. Turns out she was going to A day and we were not. She offered to take care of my S and the third roommate as well.
So, I simply told me son that if he wanted, he was welcome to go with his roommate and to let the third know as well. So they just stuck together and all had a great meal and a great time.
I know it is new, but what you will find is that everyone is like family when you are there and they kind of look out for everyone, well mostly anyway.
I know whenever I go out there, if I am taking my S out to dinner, or for any meal, I always ask if there are any friends of his that "need" to come with us. What I mean by "need" is are there any that could use some company of caring parents. There are always a couple and we have the best time. You learn more about what goes on by just sitting back and listening to a couple cadets talk then you probably every will playing 20 questions with your own.