Hope it goes great. My daughter is very social. Whenever we go to the park, or out to an event or whatever, my wife taught her to refer to other children as "friend". When we tried swim lessons on her own back in the spring, she did very good on the first session, and horrible on the second. So I'm curious, when our day comes, how she'll do on the first day compared to others. Grandma has been daycare since she was born, minus a few emergency situations. Most of the time spent around her cousins, but I wouldn't say daily too much around other kids, unless me and my wife make an effort to get her out and about. We'll see. Again, hope your son's day went great!